block: remove the call to file_remove_privs in blkdev_write_iter

file_remove_privs instantly returns 0 when not called for regular files,
so don't bother.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20230831121911.280155-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: Christoph Hellwig

block/fops.c

@@ -671,10 +671,6 @@ static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
 		iov_iter_truncate(from, size);
 	}
 
-	ret = file_remove_privs(file);
-	if (ret)
-		return ret;
-
 	ret = file_update_time(file);
 	if (ret)
 		return ret;