Revert "DO NOT MERGE:  Add status callback for start/stop advertising."

This reverts commit 4b4eebb9a5185a8ea5593a797400960e5258a57e.

Conflicts:

	core/java/android/bluetooth/BluetoothAdapter.java
Revert "DO NOT MERGE BLE peripheral mode (3/4): Add peripheral mode API."

This reverts commit ee0b3e9f824a85eebbabe307310d844a15956ae8.

Conflicts:

	core/java/android/bluetooth/BluetoothAdapter.java