Revert "Add tilapia (Nexus 7 GSM) blobs."

This reverts commit be46b00d505ea2b28c33bd26a8b2b5a2e0a18f3e.
4.2.1 blobs for tilapia - nexus 7 3g
4.2.1 blobs - the right ones now

Change-Id: I35d21ea5766459fe72852f596928b89187f3e57f
Re-work on the shitty tilapia's vendor files. Fuck you google, it's killing me you bitch.