There were two different filegroups referencing the same last released
APIs. Delete the manually defined one and switch references over to use
the one defined by prebuilt_apis.

Bug: 155197156
Test: m
Change-Id: Ib15d2c08e6400546ca03de6bfd4e5cbcc938c992
Merged-In: Ib15d2c08e6400546ca03de6bfd4e5cbcc938c992