pw_bluetooth_sapphire: Remove Adapter::LowEnergy::StopAdvertising

Adapter::LowEnergy::StopAdvertising has been unused for some time since
AdvertisementInstance was introduced.

Change-Id: Id1072f51c6e159fba4688ac42c2c7f4bb07b48e4
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/247312
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
Reviewed-by: Lulu Wang <luluwang@google.com>
Docs-Not-Needed: Ben Lawson <benlawson@google.com>
Pigweed-Auto-Submit: Ben Lawson <benlawson@google.com>

pw_bluetooth_sapphire/host/gap/adapter.cc

@@ -180,11 +180,6 @@ class AdapterImpl final : public Adapter {
       adapter_->metrics_.le.start_advertising_events.Add();
     }
 
-    void StopAdvertising(AdvertisementId advertisement_id) override {
-      adapter_->le_advertising_manager_->StopAdvertising(advertisement_id);
-      adapter_->metrics_.le.stop_advertising_events.Add();
-    }
-
     void StartDiscovery(bool active, SessionCallback callback) override {
       adapter_->le_discovery_manager_->StartDiscovery(active,
                                                       std::move(callback));

pw_bluetooth_sapphire/host/gap/adapter_test.cc

@@ -662,7 +662,7 @@ TEST_F(AdapterTest, LocalAddressForLegacyAdvertising) {
   test_device()->set_settings(settings);
   InitializeAdapter([](bool) {});
 
-  AdvertisementInstance instance;
+  std::optional<AdvertisementInstance> instance;
   auto adv_cb = [&](auto i, hci::Result<> status) {
     instance = std::move(i);
     EXPECT_EQ(fit::ok(), status);
@@ -691,7 +691,7 @@ TEST_F(AdapterTest, LocalAddressForLegacyAdvertising) {
   EXPECT_FALSE(test_device()->legacy_advertising_state().random_address);
 
   // Stop advertising.
-  adapter()->le()->StopAdvertising(instance.id());
+  instance.reset();
   RunUntilIdle();
   EXPECT_FALSE(test_device()->legacy_advertising_state().enabled);
   EXPECT_FALSE(test_device()->legacy_advertising_state().random_address);
@@ -722,7 +722,7 @@ TEST_F(AdapterTest, LocalAddressForLegacyAdvertising) {
             *test_device()->legacy_advertising_state().random_address);
 
   // Restarting advertising should refresh the controller address.
-  adapter()->le()->StopAdvertising(instance.id());
+  instance.reset();
   adapter()->le()->StartAdvertising(AdvertisingData(),
                                     AdvertisingData(),
                                     AdvertisingInterval::FAST1,
@@ -743,7 +743,7 @@ TEST_F(AdapterTest, LocalAddressForLegacyAdvertising) {
   // Disable privacy. The next time advertising gets started it should use a
   // public address.
   adapter()->le()->EnablePrivacy(false);
-  adapter()->le()->StopAdvertising(instance.id());
+  instance.reset();
   adapter()->le()->StartAdvertising(AdvertisingData(),
                                     AdvertisingData(),
                                     AdvertisingInterval::FAST1,

pw_bluetooth_sapphire/public/pw_bluetooth_sapphire/internal/host/gap/adapter.h

@@ -242,10 +242,6 @@ class Adapter {
         std::optional<DeviceAddress::Type> address_type,
         AdvertisingStatusCallback status_callback) = 0;
 
-    // Stop advertising the advertisement with the id |advertisement_id|
-    // Returns true if an advertisement was stopped, and false otherwise.
-    virtual void StopAdvertising(AdvertisementId advertisement_id) = 0;
-
     // Starts a new discovery session and reports the result via |callback|. If
     // a session has been successfully started the caller will receive a new
     // LowEnergyDiscoverySession instance via |callback| which it uniquely owns.

pw_bluetooth_sapphire/public/pw_bluetooth_sapphire/internal/host/gap/fake_adapter.h

@@ -115,8 +115,6 @@ class FakeAdapter final : public Adapter {
         std::optional<DeviceAddress::Type> address_type,
         AdvertisingStatusCallback status_callback) override;
 
-    void StopAdvertising(AdvertisementId advertisement_id) override {}
-
     void StartDiscovery(bool active, SessionCallback callback) override {}
 
     void EnablePrivacy(bool enabled) override;