mm, x86, ptrace, bts: defer branch trace stopping, cleanup

Andrew Morton noticed that mm.h needlessly includes sched.h - remove it.
Reported-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

include/linux/mm.h

@@ -13,7 +13,6 @@
 #include <linux/prio_tree.h>
 #include <linux/debug_locks.h>
 #include <linux/mm_types.h>
-#include <linux/sched.h>
 
 struct mempolicy;
 struct anon_vma;