drbd: fixup after wait_even_lock_irq() addition to generic code

Compiling drbd yields:

drivers/block/drbd/drbd_state.c: In function ‘_conn_request_state’:
drivers/block/drbd/drbd_state.c:1804:5: error: macro "wait_event_lock_irq" passed 4 arguments, but takes just 3
drivers/block/drbd/drbd_state.c:1801:3: error: ‘wait_event_lock_irq’ undeclared (first use in this function)
drivers/block/drbd/drbd_state.c:1801:3: note: each undeclared identifier is reported only once for each function it appears in
drivers/block/drbd/drbd_state.c: At top level:
drivers/block/drbd/drbd_state.c:1734:1: warning: ‘_conn_rq_cond’ defined but not used [-Wunused-function]

Due to drbd having copied the MD definition for wait_event_lock_irq()
as well. Kill them.
Signed-off-by: NJens Axboe <axboe@kernel.dk>

drivers/block/drbd/drbd_int.h

@@ -2334,30 +2334,3 @@ static inline void drbd_md_flush(struct drbd_conf *mdev)
 }
 
 #endif
-
-/* This is defined in drivers/md/md.h as well. Should go into wait.h */
-#define __wait_event_lock_irq(wq, condition, lock, cmd) 		\
-do {									\
-	wait_queue_t __wait;						\
-	init_waitqueue_entry(&__wait, current);				\
-									\
-	add_wait_queue(&wq, &__wait);					\
-	for (;;) {							\
-		set_current_state(TASK_UNINTERRUPTIBLE);		\
-		if (condition)						\
-			break;						\
-		spin_unlock_irq(&lock);					\
-		cmd;							\
-		schedule();						\
-		spin_lock_irq(&lock);					\
-	}								\
-	current->state = TASK_RUNNING;					\
-	remove_wait_queue(&wq, &__wait);				\
-} while (0)
-
-#define wait_event_lock_irq(wq, condition, lock, cmd) 			\
-do {									\
-	if (condition)	 						\
-		break;							\
-	__wait_event_lock_irq(wq, condition, lock, cmd);		\
-} while (0)

drivers/block/drbd/drbd_state.c

@@ -1800,8 +1800,7 @@ _conn_request_state(struct drbd_tconn *tconn, union drbd_state mask, union drbd_
 		spin_lock_irq(&tconn->req_lock);
 		wait_event_lock_irq(tconn->ping_wait,
 				(rv = _conn_rq_cond(tconn, mask, val)),
-				tconn->req_lock,
-				);
+				tconn->req_lock);
 		clear_bit(CONN_WD_ST_CHG_REQ, &tconn->flags);
 		if (rv < SS_SUCCESS)
 			goto abort;