AudioManager: deprecate vibrate settings

Deprecate methods, intent and constants related to vibrate
settings management: getVibrateSetting(), setVibrateSetting(),
shouldVibrate() ...

According to new vibrate/notification policy, applications should
maintain their own vibrate settings.

Issue 6036529.

Change-Id: I99bcef2c5f602131f1d9b0222f7fb39f3bbef823