DO NOT MERGE: Remove MediaBrowserServiceImplApi24

The un/subscribe methods with options are broken in android O.
This CL fixes this problem by removing all the remaining O-related code.

Bug: 37192845
Test: Run MediaBrowser/ServiceCompat in API 19-25 and android O
Change-Id: Ic856980381771252dac27391c6866a6324777995
1 file changed