Revert "audio policy: concurrent capture"

This reverts commit 4c1ef4b64d113be6ee1106375bd10cdc643e80d8.

Reason for revert: b/120588242

Bug: 120588242
Change-Id: Iac41f371cb739c54d5ce519232688bebe2285c72
Test: Launch QSB and capture from mic icon
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index efe65bb..ec36ed7 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -917,11 +917,11 @@
             config, flags, selectedDeviceId, portId);
 }
 
-status_t AudioSystem::startInput(audio_port_handle_t portId)
+status_t AudioSystem::startInput(audio_port_handle_t portId, bool *silenced)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return PERMISSION_DENIED;
-    return aps->startInput(portId);
+    return aps->startInput(portId, silenced);
 }
 
 status_t AudioSystem::stopInput(audio_port_handle_t portId)