delete unnecessary files from the docker image (#36237)

diff --git a/integrations/docker/images/base/chip-build/version b/integrations/docker/images/base/chip-build/version
index f444014..081a638 100644
--- a/integrations/docker/images/base/chip-build/version
+++ b/integrations/docker/images/base/chip-build/version
@@ -1 +1 @@
-86 : [Tizen] Pass runner's path as QEMU argument
\ No newline at end of file
+87 : [Silabs] Delete SDK files to reduce the amount of flash consummed
diff --git a/integrations/docker/images/stage-2/chip-build-efr32/Dockerfile b/integrations/docker/images/stage-2/chip-build-efr32/Dockerfile
index 3d65e2c..a202e83 100644
--- a/integrations/docker/images/stage-2/chip-build-efr32/Dockerfile
+++ b/integrations/docker/images/stage-2/chip-build-efr32/Dockerfile
@@ -18,21 +18,28 @@
     && unzip /tmp/simplicity_sdk.zip -d /tmp/simplicity_sdk \
     && rm -rf /tmp/simplicity_sdk.zip \
     # Deleting files that are not needed to save space
-    && rm -rf /tmp/simplicity_sdk/protocol/flex /tmp/simplicity_sdk/protocol/z-wave /tmp/simplicity_sdk/protocol/zigbee /tmp/simplicity_sdk/protocol/wisun \
+    && rm -rf /tmp/simplicity_sdk/protocol/flex /tmp/simplicity_sdk/protocol/z-wave /tmp/simplicity_sdk/protocol/zigbee /tmp/simplicity_sdk/protocol/wisun /tmp/simplicity_sdk/util/third_party/tensorflow_extra \
+    /tmp/simplicity_sdk/util/third_party/sqlite /tmp/simplicity_sdk/util/third_party/ot-br-posix /tmp/simplicity_sdk/util/third_party/tflite-micro /tmp/simplicity_sdk/util/third_party/tflite-fatfs /tmp/simplicity_sdk/util/third_party/unity_test_framework \
+    /tmp/simplicity_sdk/platform/radio/efr32_multiphy_configurator \
     && find /tmp/simplicity_sdk/protocol/bluetooth /tmp/simplicity_sdk/platform -name "*.a" -type f -delete \
     && find /tmp/simplicity_sdk/protocol/openthread -name "*efr32mg21*" -delete \
+    && find /tmp/simplicity_sdk \( -name "libsl_platform_ftd_efr32mg2*" -o -name "libsl_ot_stack_mtd_efr32mg2*" \) -type f -delete \
+    && find /tmp/simplicity_sdk/hardware/board/config -mindepth 1 -maxdepth 1 -type d ! \( -name '*brd4186c*' -o -name '*brd4187c*' -o -name '*brd4186a*' -o -name '*brd4187a*' -o -name '*brd2601b*' -o -name '*brd2703a*' -o -name '*brd2704a*' \
+    -o -name '*brd4316a*' -o -name '*brd4317a*' -o -name '*brd4318a*' -o -name '*brd4319a*' -o -name '*brd4116a*' -o -name '*brd4117a*' -o -name '*brd4118a*' -o -name '*brd2608a*' \) -exec rm -rf {} + \
+    && find /tmp/simplicity_sdk/platform/Device/SiliconLabs  -mindepth 1 -maxdepth 1 -type d ! \( -name 'EFR32MG24' -o -name 'EFR32MG26' -o -name 'MGM24' \) -exec rm -rf {} + \
+    && find /tmp/simplicity_sdk -name "*.slc*" -type f -delete \
     && : # last line
 
 # Clone WiSeConnect Wi-Fi and Bluetooth Software 2.10.3 (b6d6cb5)
 RUN git clone --depth=1 --single-branch --branch=2.10.3 https://github.com/SiliconLabs/wiseconnect-wifi-bt-sdk.git /tmp/wiseconnect-wifi-bt-sdk && \
     cd /tmp/wiseconnect-wifi-bt-sdk && \
-    rm -rf .git \
+    rm -rf .git examples \
     && : # last line
 
 # Clone WiSeConnect SDK v3.3.3 (a6390dd)
 RUN git clone --depth=1 --single-branch --branch=v3.3.3 https://github.com/SiliconLabs/wiseconnect.git /tmp/wifi_sdk && \
     cd /tmp/wifi_sdk && \
-    rm -rf .git \
+    rm -rf .git examples components/device/stm32 \
     && : # last line
 
 # SLC-cli install