jbd2: Remove jbd_trylock_bh_state()

No users.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: linux-ext4@vger.kernel.org
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20190809124233.13277-3-jack@suse.czSigned-off-by: Theodore Ts'o <tytso@mit.edu>

include/linux/jbd2.h

@@ -347,11 +347,6 @@ static inline void jbd_lock_bh_state(struct buffer_head *bh)
 	bit_spin_lock(BH_State, &bh->b_state);
 }
 
-static inline int jbd_trylock_bh_state(struct buffer_head *bh)
-{
-	return bit_spin_trylock(BH_State, &bh->b_state);
-}
-
 static inline int jbd_is_locked_bh_state(struct buffer_head *bh)
 {
 	return bit_spin_is_locked(BH_State, &bh->b_state);