Revert "audio policy: implement routing policy for USB docking s..."

Revert "Add support for USB audio docks."

Revert submission 16691170-usb_doc

Reason for revert: 216248574
Reverted Changes:
I090e86b2e:Add support for USB audio docks.
I461661dd4:audio policy: implement routing policy for USB doc...

Change-Id: I5772d7701e48e42f2c054e654238f6d79c2a7a0b
diff --git a/services/audiopolicy/enginedefault/src/Engine.cpp b/services/audiopolicy/enginedefault/src/Engine.cpp
index 96e6685..c73c17d 100644
--- a/services/audiopolicy/enginedefault/src/Engine.cpp
+++ b/services/audiopolicy/enginedefault/src/Engine.cpp
@@ -272,8 +272,7 @@
         devices = availableOutputDevices.getFirstDevicesFromTypes(
                                           getLastRemovableMediaDevices());
         if (!devices.isEmpty()) break;
-        devices = availableOutputDevices.getFirstDevicesFromTypes({
-                AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET, AUDIO_DEVICE_OUT_EARPIECE});
+        devices = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_EARPIECE);
     } break;
 
     case STRATEGY_SONIFICATION:
@@ -365,8 +364,7 @@
                     AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET);
         }
         if (devices2.isEmpty()) {
-            devices2 = availableOutputDevices.getFirstDevicesFromTypes({
-                        AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET, AUDIO_DEVICE_OUT_SPEAKER});
+            devices2 = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER);
         }
         DeviceVector devices3;
         if (strategy == STRATEGY_MEDIA) {