DO NOT MERGE Notify provider when disposing last UpdateRecord

Cherry-pick of Id48151eb7de40164258cde7da220a4d6bb34b89a

Location providers were not being notified of the change in status
when the last UpdateRecord was removed due to numUpdates exhaustion
or request expiry. Oops! Enjoy some free battery life!

Bug: 7611837
Change-Id: I66303b355be4e4a56a81efb5406c9353b2588595