Revert "Gallery2: support audio effects during video play."

This reverts commit cb6f98e010e8fdd61fd302296e1c70c134a1ad41.

Change-Id: I1d63ad9cb07d874160d40b2d4b8fc1c0c6d040d9

Conflicts:
	res/layout/audio_effects_dialog.xml
	res/values-zh-rCN/strings.xml
	res/values/strings.xml
	src/com/android/gallery3d/app/MovieActivity.java