rcu: Remove wrapper definitions for obsolete RCU update functions

None of synchronize_rcu_bh, synchronize_rcu_bh_expedited, call_rcu_bh,
rcu_barrier_bh, synchronize_sched, synchronize_sched_expedited,
call_rcu_sched, rcu_barrier_sched, get_state_synchronize_sched, and
cond_synchronize_sched are actually used.  This commit therefore removes
their trivial wrapper-function definitions.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>

include/linux/rcupdate.h

@@ -896,57 +896,4 @@ rcu_head_after_call_rcu(struct rcu_head *rhp, rcu_callback_t f)
 	return false;
 }
 
-
-/* Transitional pre-consolidation compatibility definitions. */
-
-static inline void synchronize_rcu_bh(void)
-{
-	synchronize_rcu();
-}
-
-static inline void synchronize_rcu_bh_expedited(void)
-{
-	synchronize_rcu_expedited();
-}
-
-static inline void call_rcu_bh(struct rcu_head *head, rcu_callback_t func)
-{
-	call_rcu(head, func);
-}
-
-static inline void rcu_barrier_bh(void)
-{
-	rcu_barrier();
-}
-
-static inline void synchronize_sched(void)
-{
-	synchronize_rcu();
-}
-
-static inline void synchronize_sched_expedited(void)
-{
-	synchronize_rcu_expedited();
-}
-
-static inline void call_rcu_sched(struct rcu_head *head, rcu_callback_t func)
-{
-	call_rcu(head, func);
-}
-
-static inline void rcu_barrier_sched(void)
-{
-	rcu_barrier();
-}
-
-static inline unsigned long get_state_synchronize_sched(void)
-{
-	return get_state_synchronize_rcu();
-}
-
-static inline void cond_synchronize_sched(unsigned long oldstate)
-{
-	cond_synchronize_rcu(oldstate);
-}
-
 #endif /* __LINUX_RCUPDATE_H */