audio policy: remove special notifications handling in call

Not needed anymore as this is handled by NotificationManager.
Extend caping of alarm and ringtone volume to call volume to all
output devices (was only done for earpiece).

Test: make
Change-Id: I9a1cd8610e42fefd0518f6ccc68e50e5541884ed
diff --git a/services/audiopolicy/enginedefault/src/Engine.cpp b/services/audiopolicy/enginedefault/src/Engine.cpp
index 007eea0..941119b 100644
--- a/services/audiopolicy/enginedefault/src/Engine.cpp
+++ b/services/audiopolicy/enginedefault/src/Engine.cpp
@@ -408,8 +408,7 @@
 
     case STRATEGY_SONIFICATION:
 
-        // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by
-        // handleIncallSonification().
+        // If incall, just select the STRATEGY_PHONE device
         if (isInCall() || outputs.isStreamActiveLocally(AUDIO_STREAM_VOICE_CALL)) {
             device = getDeviceForStrategyInt(
                     STRATEGY_PHONE, availableOutputDevices, availableInputDevices, outputs,