AudioService: Remove Analog Dock from fixed-volume devices

* Many devices identifying as "Analog Docks" have not built in volume controls
  and rely on software volume (See: All Motorola Mods, older 3.5mm docks,
  etc.)

Change-Id: Ie9b97c7b17b882a5d804db398d149bd777ccf5a4
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

services/core/java/com/android/server/audio/AudioService.java

@@ -597,7 +597,6 @@ private String makeDeviceListKey(int device, String deviceAddress) {
     // Devices for which the volume is fixed and VolumePanel slider should be disabled
     int mFixedVolumeDevices = AudioSystem.DEVICE_OUT_HDMI |
             AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET |
-            AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET |
             AudioSystem.DEVICE_OUT_HDMI_ARC |
             AudioSystem.DEVICE_OUT_SPDIF |
             AudioSystem.DEVICE_OUT_AUX_LINE;