dm: unexport dm_get_reserved_rq_based_ios

dm_get_reserved_rq_based_ios is only used in the core dm code, so
remove the export.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

drivers/md/dm-rq.c

@@ -43,7 +43,6 @@ unsigned dm_get_reserved_rq_based_ios(void)
 	return __dm_get_module_param(&reserved_rq_based_ios,
 				     RESERVED_REQUEST_BASED_IOS, DM_RESERVED_MAX_IOS);
 }
-EXPORT_SYMBOL_GPL(dm_get_reserved_rq_based_ios);
 
 static unsigned dm_get_blk_mq_nr_hw_queues(void)
 {