Revert "Missing cm/util classes"

This reverts commit 116a4d844354caffb0c5d70c5d621f55b57977f6.

	deleted:    core/java/com/android/internal/util/cm/NavigationRingConstants.java
	deleted:    core/java/com/android/internal/util/cm/NavigationRingHelpers.java
	deleted:    core/java/com/android/internal/util/cm/TorchConstants.java