Remove GCC 4.6 bot from LKGR parsing.
Remove GCC 4.6 bot from LKGR parsing.

As all Linux bots are gPrecise now, this bot is removed.

TEST=none
BUG=none
TBR=phoglund

Review URL: https://webrtc-codereview.appspot.com/1218004

git-svn-id: 917f5d3ca488f358c4d40eaec14422cf392ccec9@3679 4adac7df-926f-26a2-2b94-8c16560cd09d

mwgoldsmith/libilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,mwgoldsmith/ilbc,ShiftMediaProject/libilbc,mwgoldsmith/libilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,mwgoldsmith/ilbc,mwgoldsmith/ilbc,mwgoldsmith/ilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc