Remove dead code from ConfigurationManagerImpl (#28715)

* Remove dead code from ConfigurationManagerImpl

GetWiFiStationSecurityType and UpdateWiFiStationSecurityType are unused.

* Remove unused kConfigKey_WiFiStationSecType

... from platforms where it is just a constant.
diff --git a/src/platform/Ameba/AmebaConfig.cpp b/src/platform/Ameba/AmebaConfig.cpp
index e91905e..6ac7948 100644
--- a/src/platform/Ameba/AmebaConfig.cpp
+++ b/src/platform/Ameba/AmebaConfig.cpp
@@ -71,7 +71,6 @@
 const AmebaConfig::Key AmebaConfig::kConfigKey_ServiceId                   = { kConfigNamespace_ChipConfig, "service-id" };
 const AmebaConfig::Key AmebaConfig::kConfigKey_LastUsedEpochKeyId          = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const AmebaConfig::Key AmebaConfig::kConfigKey_FailSafeArmed               = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const AmebaConfig::Key AmebaConfig::kConfigKey_WiFiStationSecType          = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const AmebaConfig::Key AmebaConfig::kConfigKey_OperationalDeviceId         = { kConfigNamespace_ChipConfig, "op-device-id" };
 const AmebaConfig::Key AmebaConfig::kConfigKey_OperationalDeviceCert       = { kConfigNamespace_ChipConfig, "op-device-cert" };
 const AmebaConfig::Key AmebaConfig::kConfigKey_OperationalDeviceICACerts   = { kConfigNamespace_ChipConfig, "op-device-ca-certs" };
diff --git a/src/platform/Ameba/AmebaConfig.h b/src/platform/Ameba/AmebaConfig.h
index 21bf959..0c78e0e 100755
--- a/src/platform/Ameba/AmebaConfig.h
+++ b/src/platform/Ameba/AmebaConfig.h
@@ -55,7 +55,6 @@
     static const Key kConfigKey_ServiceId;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_OperationalDeviceId;
     static const Key kConfigKey_OperationalDeviceCert;
     static const Key kConfigKey_OperationalDeviceICACerts;
diff --git a/src/platform/Beken/BekenConfig.cpp b/src/platform/Beken/BekenConfig.cpp
index 8fd6fd6..60e2cdb 100644
--- a/src/platform/Beken/BekenConfig.cpp
+++ b/src/platform/Beken/BekenConfig.cpp
@@ -71,7 +71,6 @@
 const BekenConfig::Key BekenConfig::kConfigKey_GroupKeyIndex               = { kConfigNamespace_ChipConfig, "group-key-index" };
 const BekenConfig::Key BekenConfig::kConfigKey_LastUsedEpochKeyId          = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const BekenConfig::Key BekenConfig::kConfigKey_FailSafeArmed               = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const BekenConfig::Key BekenConfig::kConfigKey_WiFiStationSecType          = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const BekenConfig::Key BekenConfig::kConfigKey_OperationalDeviceId         = { kConfigNamespace_ChipConfig, "op-device-id" };
 const BekenConfig::Key BekenConfig::kConfigKey_OperationalDeviceCert       = { kConfigNamespace_ChipConfig, "op-device-cert" };
 const BekenConfig::Key BekenConfig::kConfigKey_OperationalDeviceICACerts   = { kConfigNamespace_ChipConfig, "op-device-ca-certs" };
diff --git a/src/platform/Beken/BekenConfig.h b/src/platform/Beken/BekenConfig.h
index 7913e39..94362c0 100755
--- a/src/platform/Beken/BekenConfig.h
+++ b/src/platform/Beken/BekenConfig.h
@@ -55,7 +55,6 @@
     static const Key kConfigKey_GroupKeyIndex;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_OperationalDeviceId;
     static const Key kConfigKey_OperationalDeviceCert;
     static const Key kConfigKey_OperationalDeviceICACerts;
diff --git a/src/platform/ESP32/ESP32Config.cpp b/src/platform/ESP32/ESP32Config.cpp
index a536d46..37bfe68 100644
--- a/src/platform/ESP32/ESP32Config.cpp
+++ b/src/platform/ESP32/ESP32Config.cpp
@@ -85,7 +85,6 @@
 const ESP32Config::Key ESP32Config::kConfigKey_ServiceId          = { kConfigNamespace_ChipConfig, "service-id" };
 const ESP32Config::Key ESP32Config::kConfigKey_LastUsedEpochKeyId = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const ESP32Config::Key ESP32Config::kConfigKey_FailSafeArmed      = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const ESP32Config::Key ESP32Config::kConfigKey_WiFiStationSecType = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const ESP32Config::Key ESP32Config::kConfigKey_RegulatoryLocation = { kConfigNamespace_ChipConfig, "reg-location" };
 const ESP32Config::Key ESP32Config::kConfigKey_CountryCode        = { kConfigNamespace_ChipConfig, "country-code" };
 const ESP32Config::Key ESP32Config::kConfigKey_UniqueId           = { kConfigNamespace_ChipConfig, "unique-id" };
diff --git a/src/platform/ESP32/ESP32Config.h b/src/platform/ESP32/ESP32Config.h
index e07d98e..5804f53 100644
--- a/src/platform/ESP32/ESP32Config.h
+++ b/src/platform/ESP32/ESP32Config.h
@@ -87,7 +87,6 @@
     static const Key kConfigKey_ServiceId;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;
     static const Key kConfigKey_UniqueId;
diff --git a/src/platform/Linux/ConfigurationManagerImpl.cpp b/src/platform/Linux/ConfigurationManagerImpl.cpp
index f5d1634..92e2c1e 100644
--- a/src/platform/Linux/ConfigurationManagerImpl.cpp
+++ b/src/platform/Linux/ConfigurationManagerImpl.cpp
@@ -200,46 +200,6 @@
     return WriteConfigValue(configKey, value);
 }
 
-#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-CHIP_ERROR ConfigurationManagerImpl::GetWiFiStationSecurityType(WiFiAuthSecurityType & secType)
-{
-    CHIP_ERROR err;
-    uint32_t secTypeInt;
-
-    err = ReadConfigValue(PosixConfig::kConfigKey_WiFiStationSecType, secTypeInt);
-    if (err == CHIP_NO_ERROR)
-    {
-        secType = static_cast<WiFiAuthSecurityType>(secTypeInt);
-    }
-    return err;
-}
-
-CHIP_ERROR ConfigurationManagerImpl::UpdateWiFiStationSecurityType(WiFiAuthSecurityType secType)
-{
-    CHIP_ERROR err;
-    WiFiAuthSecurityType curSecType;
-
-    if (secType != kWiFiSecurityType_NotSpecified)
-    {
-        err = GetWiFiStationSecurityType(curSecType);
-        if (err == CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND || (err == CHIP_NO_ERROR && secType != curSecType))
-        {
-            uint32_t secTypeInt = static_cast<uint32_t>(secType);
-            err                 = WriteConfigValue(PosixConfig::kConfigKey_WiFiStationSecType, secTypeInt);
-        }
-        SuccessOrExit(err);
-    }
-    else
-    {
-        err = PosixConfig::ClearConfigValue(PosixConfig::kConfigKey_WiFiStationSecType);
-        SuccessOrExit(err);
-    }
-
-exit:
-    return err;
-}
-#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-
 CHIP_ERROR ConfigurationManagerImpl::ReadConfigValue(Key key, bool & val)
 {
     return PosixConfig::ReadConfigValue(key, val);
diff --git a/src/platform/Linux/ConfigurationManagerImpl.h b/src/platform/Linux/ConfigurationManagerImpl.h
index ecf5aea..760b3d0 100644
--- a/src/platform/Linux/ConfigurationManagerImpl.h
+++ b/src/platform/Linux/ConfigurationManagerImpl.h
@@ -60,11 +60,6 @@
     CHIP_ERROR ReadPersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t & value) override;
     CHIP_ERROR WritePersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t value) override;
 
-#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-    CHIP_ERROR GetWiFiStationSecurityType(Internal::WiFiAuthSecurityType & secType);
-    CHIP_ERROR UpdateWiFiStationSecurityType(Internal::WiFiAuthSecurityType secType);
-#endif
-
     // NOTE: Other public interface methods are implemented by GenericConfigurationManagerImpl<>.
     CHIP_ERROR WriteConfigValue(Key key, uint16_t val);
     CHIP_ERROR ReadConfigValue(Key key, uint16_t & val);
diff --git a/src/platform/Linux/PosixConfig.cpp b/src/platform/Linux/PosixConfig.cpp
index 6daa22e..61a1fbd 100644
--- a/src/platform/Linux/PosixConfig.cpp
+++ b/src/platform/Linux/PosixConfig.cpp
@@ -69,7 +69,6 @@
 const PosixConfig::Key PosixConfig::kConfigKey_ServiceId          = { kConfigNamespace_ChipConfig, "service-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_LastUsedEpochKeyId = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_FailSafeArmed      = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const PosixConfig::Key PosixConfig::kConfigKey_WiFiStationSecType = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const PosixConfig::Key PosixConfig::kConfigKey_RegulatoryLocation = { kConfigNamespace_ChipConfig, "regulatory-location" };
 const PosixConfig::Key PosixConfig::kConfigKey_CountryCode        = { kConfigNamespace_ChipConfig, "country-code" };
 const PosixConfig::Key PosixConfig::kConfigKey_LocationCapability = { kConfigNamespace_ChipConfig, "location-capability" };
diff --git a/src/platform/Linux/PosixConfig.h b/src/platform/Linux/PosixConfig.h
index e8370a3..c04d4a9 100644
--- a/src/platform/Linux/PosixConfig.h
+++ b/src/platform/Linux/PosixConfig.h
@@ -68,7 +68,6 @@
     static const Key kConfigKey_ServiceId;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_SetupDiscriminator;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;
diff --git a/src/platform/Tizen/PosixConfig.cpp b/src/platform/Tizen/PosixConfig.cpp
index c8b2d36..e6f1883 100644
--- a/src/platform/Tizen/PosixConfig.cpp
+++ b/src/platform/Tizen/PosixConfig.cpp
@@ -62,7 +62,6 @@
 const PosixConfig::Key PosixConfig::kConfigKey_ServiceId          = { kConfigNamespace_ChipConfig, "service-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_LastUsedEpochKeyId = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_FailSafeArmed      = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const PosixConfig::Key PosixConfig::kConfigKey_WiFiStationSecType = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const PosixConfig::Key PosixConfig::kConfigKey_RegulatoryLocation = { kConfigNamespace_ChipConfig, "regulatory-location" };
 const PosixConfig::Key PosixConfig::kConfigKey_CountryCode        = { kConfigNamespace_ChipConfig, "country-code" };
 const PosixConfig::Key PosixConfig::kConfigKey_UniqueId           = { kConfigNamespace_ChipConfig, "unique-id" };
diff --git a/src/platform/Tizen/PosixConfig.h b/src/platform/Tizen/PosixConfig.h
index 9c5402c..a5d8d6a 100644
--- a/src/platform/Tizen/PosixConfig.h
+++ b/src/platform/Tizen/PosixConfig.h
@@ -66,7 +66,6 @@
     static const Key kConfigKey_ServiceId;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_SetupDiscriminator;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;
diff --git a/src/platform/android/AndroidConfig.cpp b/src/platform/android/AndroidConfig.cpp
index b2e3357..1afc796 100644
--- a/src/platform/android/AndroidConfig.cpp
+++ b/src/platform/android/AndroidConfig.cpp
@@ -87,7 +87,6 @@
 const AndroidConfig::Key AndroidConfig::kConfigKey_ServiceId          = { kConfigNamespace_ChipConfig, "service-id" };
 const AndroidConfig::Key AndroidConfig::kConfigKey_LastUsedEpochKeyId = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const AndroidConfig::Key AndroidConfig::kConfigKey_FailSafeArmed      = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const AndroidConfig::Key AndroidConfig::kConfigKey_WiFiStationSecType = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const AndroidConfig::Key AndroidConfig::kConfigKey_RegulatoryLocation = { kConfigNamespace_ChipConfig, "regulatory-location" };
 const AndroidConfig::Key AndroidConfig::kConfigKey_CountryCode        = { kConfigNamespace_ChipConfig, "country-code" };
 
diff --git a/src/platform/android/AndroidConfig.h b/src/platform/android/AndroidConfig.h
index d6f446d..899dc0f 100644
--- a/src/platform/android/AndroidConfig.h
+++ b/src/platform/android/AndroidConfig.h
@@ -67,7 +67,6 @@
     static const Key kConfigKey_ServiceId;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_SetupDiscriminator;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;
diff --git a/src/platform/android/ConfigurationManagerImpl.cpp b/src/platform/android/ConfigurationManagerImpl.cpp
index 68a1020..535698a 100644
--- a/src/platform/android/ConfigurationManagerImpl.cpp
+++ b/src/platform/android/ConfigurationManagerImpl.cpp
@@ -141,18 +141,6 @@
     AndroidConfig::RunConfigUnitTest();
 }
 
-#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-CHIP_ERROR ConfigurationManagerImpl::GetWiFiStationSecurityType(WiFiAuthSecurityType & secType)
-{
-    return CHIP_ERROR_NOT_IMPLEMENTED;
-}
-
-CHIP_ERROR ConfigurationManagerImpl::UpdateWiFiStationSecurityType(WiFiAuthSecurityType secType)
-{
-    return CHIP_ERROR_NOT_IMPLEMENTED;
-}
-#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-
 void ConfigurationManagerImpl::DoFactoryReset(intptr_t arg)
 {
     return;
diff --git a/src/platform/android/ConfigurationManagerImpl.h b/src/platform/android/ConfigurationManagerImpl.h
index 213a6e3..51b04eb 100644
--- a/src/platform/android/ConfigurationManagerImpl.h
+++ b/src/platform/android/ConfigurationManagerImpl.h
@@ -52,11 +52,6 @@
     CHIP_ERROR ReadPersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t & value) override;
     CHIP_ERROR WritePersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t value) override;
 
-#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-    CHIP_ERROR GetWiFiStationSecurityType(Internal::WiFiAuthSecurityType & secType);
-    CHIP_ERROR UpdateWiFiStationSecurityType(Internal::WiFiAuthSecurityType secType);
-#endif
-
     // NOTE: Other public interface methods are implemented by GenericConfigurationManagerImpl<>.
 
     // ===== Members that implement the GenericConfigurationManagerImpl protected interface.
diff --git a/src/platform/bouffalolab/common/BLConfig.h b/src/platform/bouffalolab/common/BLConfig.h
index 1bd8011..5c11160 100644
--- a/src/platform/bouffalolab/common/BLConfig.h
+++ b/src/platform/bouffalolab/common/BLConfig.h
@@ -56,7 +56,6 @@
     static constexpr const char * kConfigKey_HardwareVersion             = ("hardware-ver");
     static constexpr const char * kConfigKey_LastUsedEpochKeyId          = ("last-ek-id");
     static constexpr const char * kConfigKey_FailSafeArmed               = ("fail-safe-armed");
-    static constexpr const char * kConfigKey_WiFiStationSecType          = ("sta-sec-type");
     static constexpr const char * kConfigKey_OperationalDeviceId         = ("op-device-id");
     static constexpr const char * kConfigKey_OperationalDeviceCert       = ("op-device-cert");
     static constexpr const char * kConfigKey_OperationalDeviceICACerts   = ("op-device-ca-certs");
diff --git a/src/platform/cc32xx/CC32XXConfig.cpp b/src/platform/cc32xx/CC32XXConfig.cpp
index b6ed391..599403b 100644
--- a/src/platform/cc32xx/CC32XXConfig.cpp
+++ b/src/platform/cc32xx/CC32XXConfig.cpp
@@ -309,7 +309,6 @@
 const CC32XXConfig::Key CC32XXConfig::kConfigKey_GroupKeyIndex      = { "TI_kConfigKey_GroupKeyIndex" };
 const CC32XXConfig::Key CC32XXConfig::kConfigKey_LastUsedEpochKeyId = { "TI_kConfigKey_LastUsedEpochKeyId" };
 const CC32XXConfig::Key CC32XXConfig::kConfigKey_FailSafeArmed      = { "TI_kConfigKey_FailSafeArmed" };
-const CC32XXConfig::Key CC32XXConfig::kConfigKey_WiFiStationSecType = { "TI_kConfigKey_WiFiStationSecType" };
 const CC32XXConfig::Key CC32XXConfig::kConfigKey_RegulatoryLocation = { "TI_kConfigKey_RegulatoryLocation" };
 const CC32XXConfig::Key CC32XXConfig::kConfigKey_CountryCode        = { "TI_kConfigKey_CountryCode" };
 const CC32XXConfig::Key CC32XXConfig::kConfigKey_Breadcrumb         = { "TI_kConfigKey_Breadcrumb" };
diff --git a/src/platform/cc32xx/CC32XXConfig.h b/src/platform/cc32xx/CC32XXConfig.h
index 5824afa..8179d98 100644
--- a/src/platform/cc32xx/CC32XXConfig.h
+++ b/src/platform/cc32xx/CC32XXConfig.h
@@ -52,7 +52,6 @@
     static const Key kConfigKey_GroupKeyIndex;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;
     static const Key kConfigKey_Breadcrumb;
diff --git a/src/platform/mbed/MbedConfig.cpp b/src/platform/mbed/MbedConfig.cpp
index 81f8f98..63d5f87 100644
--- a/src/platform/mbed/MbedConfig.cpp
+++ b/src/platform/mbed/MbedConfig.cpp
@@ -81,7 +81,6 @@
 const MbedConfig::Key MbedConfig::kConfigKey_ServiceId          = { CONFIG_KEY("service-id") };
 const MbedConfig::Key MbedConfig::kConfigKey_LastUsedEpochKeyId = { CONFIG_KEY("last-ek-id") };
 const MbedConfig::Key MbedConfig::kConfigKey_FailSafeArmed      = { CONFIG_KEY("fail-safe-armed") };
-const MbedConfig::Key MbedConfig::kConfigKey_WiFiStationSecType = { CONFIG_KEY("sta-sec-type") };
 const MbedConfig::Key MbedConfig::kConfigKey_RegulatoryLocation = { CONFIG_KEY("regulatory-location") };
 const MbedConfig::Key MbedConfig::kConfigKey_CountryCode        = { CONFIG_KEY("country-code") };
 const MbedConfig::Key MbedConfig::kConfigKey_UniqueId           = { CONFIG_KEY("unique-id") };
diff --git a/src/platform/mbed/MbedConfig.h b/src/platform/mbed/MbedConfig.h
index f9f82bc..70b1dfa 100644
--- a/src/platform/mbed/MbedConfig.h
+++ b/src/platform/mbed/MbedConfig.h
@@ -65,7 +65,6 @@
     static const Key kConfigKey_ServiceId;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_SetupDiscriminator;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;
diff --git a/src/platform/webos/ConfigurationManagerImpl.cpp b/src/platform/webos/ConfigurationManagerImpl.cpp
index 6958e4a..710840f 100644
--- a/src/platform/webos/ConfigurationManagerImpl.cpp
+++ b/src/platform/webos/ConfigurationManagerImpl.cpp
@@ -180,46 +180,6 @@
     return WriteConfigValue(configKey, value);
 }
 
-#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-CHIP_ERROR ConfigurationManagerImpl::GetWiFiStationSecurityType(WiFiAuthSecurityType & secType)
-{
-    CHIP_ERROR err;
-    uint32_t secTypeInt;
-
-    err = ReadConfigValue(PosixConfig::kConfigKey_WiFiStationSecType, secTypeInt);
-    if (err == CHIP_NO_ERROR)
-    {
-        secType = static_cast<WiFiAuthSecurityType>(secTypeInt);
-    }
-    return err;
-}
-
-CHIP_ERROR ConfigurationManagerImpl::UpdateWiFiStationSecurityType(WiFiAuthSecurityType secType)
-{
-    CHIP_ERROR err;
-    WiFiAuthSecurityType curSecType;
-
-    if (secType != kWiFiSecurityType_NotSpecified)
-    {
-        err = GetWiFiStationSecurityType(curSecType);
-        if (err == CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND || (err == CHIP_NO_ERROR && secType != curSecType))
-        {
-            uint32_t secTypeInt = static_cast<uint32_t>(secType);
-            err                 = WriteConfigValue(PosixConfig::kConfigKey_WiFiStationSecType, secTypeInt);
-        }
-        SuccessOrExit(err);
-    }
-    else
-    {
-        err = PosixConfig::ClearConfigValue(PosixConfig::kConfigKey_WiFiStationSecType);
-        SuccessOrExit(err);
-    }
-
-exit:
-    return err;
-}
-#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-
 CHIP_ERROR ConfigurationManagerImpl::ReadConfigValue(Key key, bool & val)
 {
     return PosixConfig::ReadConfigValue(key, val);
diff --git a/src/platform/webos/ConfigurationManagerImpl.h b/src/platform/webos/ConfigurationManagerImpl.h
index 6fc9961..53746fe 100644
--- a/src/platform/webos/ConfigurationManagerImpl.h
+++ b/src/platform/webos/ConfigurationManagerImpl.h
@@ -60,11 +60,6 @@
     CHIP_ERROR ReadPersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t & value) override;
     CHIP_ERROR WritePersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t value) override;
 
-#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
-    CHIP_ERROR GetWiFiStationSecurityType(Internal::WiFiAuthSecurityType & secType);
-    CHIP_ERROR UpdateWiFiStationSecurityType(Internal::WiFiAuthSecurityType secType);
-#endif
-
     // NOTE: Other public interface methods are implemented by GenericConfigurationManagerImpl<>.
     CHIP_ERROR WriteConfigValue(Key key, uint16_t val);
     CHIP_ERROR ReadConfigValue(Key key, uint16_t & val);
diff --git a/src/platform/webos/PosixConfig.cpp b/src/platform/webos/PosixConfig.cpp
index b35ab54..79cbd2e 100644
--- a/src/platform/webos/PosixConfig.cpp
+++ b/src/platform/webos/PosixConfig.cpp
@@ -72,7 +72,6 @@
 const PosixConfig::Key PosixConfig::kConfigKey_GroupKeyIndex      = { kConfigNamespace_ChipConfig, "group-key-index" };
 const PosixConfig::Key PosixConfig::kConfigKey_LastUsedEpochKeyId = { kConfigNamespace_ChipConfig, "last-ek-id" };
 const PosixConfig::Key PosixConfig::kConfigKey_FailSafeArmed      = { kConfigNamespace_ChipConfig, "fail-safe-armed" };
-const PosixConfig::Key PosixConfig::kConfigKey_WiFiStationSecType = { kConfigNamespace_ChipConfig, "sta-sec-type" };
 const PosixConfig::Key PosixConfig::kConfigKey_RegulatoryLocation = { kConfigNamespace_ChipConfig, "regulatory-location" };
 const PosixConfig::Key PosixConfig::kConfigKey_CountryCode        = { kConfigNamespace_ChipConfig, "country-code" };
 const PosixConfig::Key PosixConfig::kConfigKey_Breadcrumb         = { kConfigNamespace_ChipConfig, "breadcrumb" };
diff --git a/src/platform/webos/PosixConfig.h b/src/platform/webos/PosixConfig.h
index a7cd702..8835bd0 100644
--- a/src/platform/webos/PosixConfig.h
+++ b/src/platform/webos/PosixConfig.h
@@ -71,7 +71,6 @@
     static const Key kConfigKey_GroupKeyIndex;
     static const Key kConfigKey_LastUsedEpochKeyId;
     static const Key kConfigKey_FailSafeArmed;
-    static const Key kConfigKey_WiFiStationSecType;
     static const Key kConfigKey_SetupDiscriminator;
     static const Key kConfigKey_RegulatoryLocation;
     static const Key kConfigKey_CountryCode;