sched/core: remove __cpuinit section tag that crept back in.

We removed __cpuinit support (leaving no-op stubs) quite some time
ago.  However this one crept back in as of commit a803f026
("sched: Initialize rq->age_stamp on processor start")

Since we want to clobber the stubs too, get this removed now.

Cc: Corey Minyard <cminyard@mvista.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>