m7-common: remove extraneous proprietary files

Change-Id: I7dceab8efa59810063fc34acd2e499e9b1541db2
m7-common: update proprietary libs to Google Edition

HTC version: 2.14.1700.15

Change-Id: I9b2de7bf6524ca91668e2630b2bb3ebe15f97779
m7-common: remove unused llvm lib

Change-Id: Ie4d296d3a9d4183995dc7744ba5a84c493675711