Revert "Alarm: Show a warning toast when alarm volume is set to silent"

This reverts commit d30043b615d125b95cefe219a9cdb7afbb7e689a.

Conflicts:
	src/com/android/deskclock/AlarmClockFragment.java

	modified:   res/values/cm_strings.xml
	modified:   src/com/android/deskclock/AlarmClockFragment.java
	modified:   src/com/android/deskclock/widget/ActionableToastBar.java