MediaScanner: disable album artist support until MediaProvider really supports it
MediaScanner: disable album artist support until MediaProvider really supports it

Fixes a "no such column" exception in MediaProvider.update() that I somehow
missed when testing the MediaProvider refactoring.

Change-Id: Icc502a5c0e3bd150b353972d000b978a9e044abc
Signed-off-by: Mike Lockwood <368d0007e4626f70737d16df5e49ed8806b98c3f@android.com>

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base