Revert "AudioFlinger: Control volume using Port ID"

This reverts commit 55b2a0fdcf59ad7ef9d5c39feafdcfdf49adc72d.

Reason for revert: b/356164780

Change-Id: I8ffa2a3ef93f66379418344ee680b8c624843366
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 6194002..f414862 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -423,7 +423,6 @@
     AudioPolicyInterface::output_type_t outputType;
     bool isSpatialized = false;
     bool isBitPerfect = false;
-    float volume;
     status_t result = mAudioPolicyManager->getOutputForAttr(&attr, &output, session,
                                                             &stream,
                                                             attributionSource,
@@ -432,8 +431,7 @@
                                                             &secondaryOutputs,
                                                             &outputType,
                                                             &isSpatialized,
-                                                            &isBitPerfect,
-                                                            &volume);
+                                                            &isBitPerfect);
 
     // FIXME: Introduce a way to check for the the telephony device before opening the output
     if (result == NO_ERROR) {
@@ -497,7 +495,6 @@
         _aidl_return->isBitPerfect = isBitPerfect;
         _aidl_return->attr = VALUE_OR_RETURN_BINDER_STATUS(
                 legacy2aidl_audio_attributes_t_AudioAttributes(attr));
-        _aidl_return->volume = volume;
     } else {
         _aidl_return->configBase.format = VALUE_OR_RETURN_BINDER_STATUS(
                 legacy2aidl_audio_format_t_AudioFormatDescription(config.format));