raid5: remove STRIPE_OPS_REQ_PENDING

This stripe state is not used anymore after commit 51acbcec6c42b24
("md: remove CONFIG_MULTICORE_RAID456"), so remove the obsoleted
state.

gjiang@nb01257:~/md$ grep STRIPE_OPS_REQ_PENDING drivers/md/ -r
drivers/md/raid5.c:					  (1 << STRIPE_OPS_REQ_PENDING) |
drivers/md/raid5.h:	STRIPE_OPS_REQ_PENDING,

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 9fc6737..223e97a 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4621,7 +4621,6 @@ static void break_stripe_batch_list(struct stripe_head *head_sh,
 					  (1 << STRIPE_FULL_WRITE) |
 					  (1 << STRIPE_BIOFILL_RUN) |
 					  (1 << STRIPE_COMPUTE_RUN)  |
-					  (1 << STRIPE_OPS_REQ_PENDING) |
 					  (1 << STRIPE_DISCARD) |
 					  (1 << STRIPE_BATCH_READY) |
 					  (1 << STRIPE_BATCH_ERR) |
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index cf991f1..877e7d3 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -357,7 +357,6 @@ enum {
 	STRIPE_FULL_WRITE,	/* all blocks are set to be overwritten */
 	STRIPE_BIOFILL_RUN,
 	STRIPE_COMPUTE_RUN,
-	STRIPE_OPS_REQ_PENDING,
 	STRIPE_ON_UNPLUG_LIST,
 	STRIPE_DISCARD,
 	STRIPE_ON_RELEASE_LIST,