Audio: Remove unnecessary unmute when A2dp device disconnects.

It will cause the audio leak if stream unmutes when Bt-A2dp
disconnect event is received, which will be done in the routing
to non-a2dp device.

Remove unnecessary unmute action when A2dp device disconnects.

CRs-Fixed: 2533905
Change-Id: I74207d13c763a7c0ff5f95bbd90c8ac7b0d61562
diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 43732f5..d148b79 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -8314,21 +8314,6 @@
                 adev->allow_afe_proxy_usage = true;
             }
         }
-        if (audio_is_a2dp_out_device(device)) {
-           struct audio_usecase *usecase;
-           struct listnode *node;
-           list_for_each(node, &adev->usecase_list) {
-               usecase = node_to_item(node, struct audio_usecase, list);
-               if (PCM_PLAYBACK == usecase->type && usecase->stream.out &&
-                  (usecase->stream.out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) &&
-                   usecase->stream.out->a2dp_compress_mute) {
-                   struct stream_out *out = usecase->stream.out;
-                   ALOGD("Unmuting the stream when Bt-A2dp disconnected and stream is mute");
-                   out->a2dp_compress_mute = false;
-                   out_set_compr_volume(&out->stream, out->volume_l, out->volume_r);
-               }
-           }
-        }
     }
 
     audio_extn_hfp_set_parameters(adev, parms);