tracing: Remove {start,stop}_branch_trace
tracing: Remove {start,stop}_branch_trace

Both start_branch_trace() and stop_branch_trace() are used in only one
location, and are both static. As they are small functions there is no
need to keep them separated out.

Link: http://lkml.kernel.org/r/1445000689-32596-1-git-send-email-395d9bb87d8fb3640a03a9e24bd55fe3dab2053e@gmail.com

Signed-off-by: Dmitry Safonov <395d9bb87d8fb3640a03a9e24bd55fe3dab2053e@gmail.com>
Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs