Revert "Settings: add less annoying sound notification"

This reverts commit 512bd5484742ff9dad3d069d488d145d6dc7fc23.

Conflicts:
	proguard.flags
	res/values/aogp_strings.xml

Change-Id: Iaed255297b95d96a4e42b64cd591e2eeb3f5b15b
Merge branch 'lp' of github.com:AOGP-L/android_packages_apps_Settings into lp