xfs: remove unnecessary assertion from xfs_qm_vop_create_dqattach

The check XFS_IS_QUOTA_RUNNING() has been done when enter the
xfs_qm_vop_create_dqattach() function, it will return directly
if the result is false, so the followed XFS_IS_QUOTA_RUNNING()
assertion is unnecessary. If we truly care about this, the check
also can be added to the condition of next if statements.
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

fs/xfs/xfs_qm.c

@@ -1932,7 +1932,6 @@ xfs_qm_vop_create_dqattach(
 		return;
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
-	ASSERT(XFS_IS_QUOTA_RUNNING(mp));
 
 	if (udqp && XFS_IS_UQUOTA_ON(mp)) {
 		ASSERT(ip->i_udquot == NULL);