Stop using IntentService and use async receiver.

Also:
- Set FLAG_RECEIVER_INCLUDE_BACKGROUND for ACTION_EVENT_REMINDER
- Remove the wake lock; with goAsync() now it's not needed.

Test: Manual test with: adb shell am broadcast --receiver-include-background -a android.intent.action.EVENT_REMINDER -d content:
Bug 35207106

Change-Id: Ib3afd744c5b94522d08778c367641d7c8f444a1f
5 files changed