Revert "libstagefright: fix drainInputBuffers for FlushCompleteEmulation Quirk"

This reverts commit 1304509aea2ed18017bd9afa922528c217156d37

Change-Id: I0189284441166ca37a39fabb1ff13d10fb2fda3c
Revert "accelerate camera recording start up speed"

This reverts commit fd1ef6154d9c508348f8e35b34bc0de7d4c91c86.

Change-Id: I34b75ddc9c6aeb6b9948f1dc3ed08286dfdd58f2
libstagefright: stop audio source before deleting AudioPlayer

-audio source won't be stopped during AudioPlayer destruction
 due to start failed and AUDIOPLAYER_STARTED not set
-handle audio source stop in AwesomePlayer if AUDIOPLAYER_STARTED
 not set

Change-Id: I395c045a0a8a5d5b6ea8cc762d6a2636bb885b0e
CRs-Fixed: 704605