pw_spi_pico: Removed disused baud_rate

pw_spi_pico no longer initializes the SPI bus, so removing
disused member variable.

Change-Id: Ide97019fbbfb7d09fd9e06ab1e6bfb6cb6dd0cdc
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/125470
Commit-Queue: Chris Mumford <cmumford@google.com>
Reviewed-by: Anthony DiGirolamo <tonymd@google.com>
diff --git a/applications/app_common_impl/common_pico.cc b/applications/app_common_impl/common_pico.cc
index 3b6984c..f916f79 100644
--- a/applications/app_common_impl/common_pico.cc
+++ b/applications/app_common_impl/common_pico.cc
@@ -87,7 +87,7 @@
 #endif
 PicoDigitalOut s_display_cs_pin(TFT_CS);
 PicoChipSelector s_spi_chip_selector(s_display_cs_pin);
-PicoInitiator s_spi_initiator(SPI_PORT, kBaudRate);
+PicoInitiator s_spi_initiator(SPI_PORT);
 VirtualMutex s_spi_initiator_mutex;
 Borrowable<Initiator> s_borrowable_spi_initiator(s_spi_initiator,
                                                  s_spi_initiator_mutex);
@@ -126,7 +126,7 @@
 SpiValues::SpiValues(pw::spi::Config config,
                      pw::spi::ChipSelector& selector,
                      pw::sync::VirtualMutex& initiator_mutex)
-    : initiator(SPI_PORT, kBaudRate),
+    : initiator(SPI_PORT),
       borrowable_initiator(initiator, initiator_mutex),
       device(borrowable_initiator, config, selector) {}
 
diff --git a/pw_spi_pico/initiator.cc b/pw_spi_pico/initiator.cc
index 2513d4c..ad03f8d 100644
--- a/pw_spi_pico/initiator.cc
+++ b/pw_spi_pico/initiator.cc
@@ -61,8 +61,7 @@
 
 }  // namespace
 
-PicoInitiator::PicoInitiator(spi_inst_t* spi, uint32_t baud_rate)
-    : spi_(spi), baud_rate_(baud_rate), bits_per_word_(8) {}
+PicoInitiator::PicoInitiator(spi_inst_t* spi) : spi_(spi), bits_per_word_(8) {}
 
 Status PicoInitiator::LazyInit() {
   // Already initialized - nothing to do.
diff --git a/pw_spi_pico/public/pw_spi_pico/initiator.h b/pw_spi_pico/public/pw_spi_pico/initiator.h
index 67f368a..135401a 100644
--- a/pw_spi_pico/public/pw_spi_pico/initiator.h
+++ b/pw_spi_pico/public/pw_spi_pico/initiator.h
@@ -24,7 +24,7 @@
 // Pico SDK userspace implementation of the SPI Initiator
 class PicoInitiator : public Initiator {
  public:
-  PicoInitiator(spi_inst_t* spi, uint32_t baud_rate);
+  PicoInitiator(spi_inst_t* spi);
 
   // Implements pw::spi::Initiator:
   Status Configure(const Config& config) override;
@@ -34,7 +34,6 @@
   Status LazyInit();
 
   spi_inst_t* spi_;
-  uint32_t baud_rate_;
   Status init_status_;         // The saved LazyInit() status.
   BitsPerWord bits_per_word_;  // Last Configure() bits_per_word.
 };