Remove duplicate -B entry for host linux clang ldflags

In cc/cc.go, we already add -B{GccRoot}/{GccTriple}/bin to all clang
cflags, asflags, and ldflags. So we don't need to add a linux specific
version here.

Change-Id: I42d71662c78a8170463dfec932a633e4d4ff52c8
1 file changed