sh: remove stray markers.

arch/sh has a couple of stray markers without any users introduced
in commit 3d58695edb.  Remove them in
preparation of removing the markers in favour of the TRACE_EVENT
macro (and also because we don't keep dead code around).

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/process_32.c

@@ -119,8 +119,6 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 	pid = do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
 		      &regs, 0, NULL, NULL);
 
-	trace_mark(kernel_arch_kthread_create, "pid %d fn %p", pid, fn);
-
 	return pid;
 }