rcu: Remove __maybe_unused from rcu_cpu_has_callbacks()

The rcu_cpu_has_callbacks() function is now used in all configurations,
so this commit removes the __maybe_unused.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2018-05-17 13:15:40 -07:00
commit 51fbb910f5