Remove special case for com.android.art.release, which no longer exists.

Test: `m droid com.android.art{,.debug}` and boot in Cuttlefish
  with and without OVERRIDE_TARGET_FLATTEN_APEX=true
Bug: 169639321
Change-Id: I7581ab2a99822a6e80e158ae58ffc4b6c82f0f99
1 file changed