[ARM] sema_count() removal

sema_count() defined only for ARM but not used anywhere.

Signed-off-by: Arthur Othieno <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

include/asm-arm/semaphore.h

···
 	sema_init(sem, 0);
 }
 
-static inline int sema_count(struct semaphore *sem)
-{
-	return atomic_read(&sem->count);
-}
-
 /*
  * special register calling convention
  */