tracing: Kill "filter_string" arg of replace_preds()
tracing: Kill "filter_string" arg of replace_preds()

Cosmetic, but replace_preds() doesn't need/use "char *filter_string".
Remove it to microsimplify the code.

Link: http://lkml.kernel.org/p/20140715184832.GA20519@redhat.com

Signed-off-by: Oleg Nesterov <20b70f0af00562e63758b9ee42012ecc96c58590@redhat.com>
Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

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