Revert "Make ROM zip compatible with ext4/f2fs"

This reverts commit 6c84d4a00e4b8da58f0bbc688d4f8fa9da1f58b4.

Change-Id: I252ecc586896ad3d6ac77c4bf4080ba028e486a4
hammerhead: Update IPC router security configuration

Change-Id: Ia89a4920e07d5790cbd3dde9780349dc42f241e6