releasetools-extras: add more unnecessary files

Needed to give us some space on the /system partition, especially
on galaxy5.

Conflicts:
	releasetools-extras.txt

(cherry picked from commit 286d27ebb6a8bb176014d4bf6115bd185507f760)

Change-Id: Ibfe20ff0cfb0db5ad80bff916894b8ac301ab5b1