HAL: Remove HIDL check in LeAudioClientInterface stub

Tag: #refactor
Bug: 221192836
Test: atest BluetoothInstrumentationTests
Change-Id: Ieb2e05df7ae5526eda69b6f180da5eeeba735d4f

system/audio_hal_interface/le_audio_software.cc

@@ -287,8 +287,6 @@ void LeAudioClientInterface::Source::SetRemoteDelay(uint16_t delay_report_ms) {
 
 void LeAudioClientInterface::Source::StartSession() {
   LOG(INFO) << __func__;
-  if (!hidl::le_audio::is_source_hal_enabled()) return;
-
   if (HalVersionManager::GetHalVersion() ==
       BluetoothAudioHalVersion::VERSION_2_1) {
     AudioConfiguration_2_1 audio_config;