iomap: drop an obsolete comment in iomap_dio_bio_iter

No more zone append special casing in iomap for quite a while.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20241111121340.1390540-1-hch@lst.de
Signed-off-by: Christian Brauner <brauner@kernel.org>

fs/iomap/direct-io.c

@@ -383,11 +383,6 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter,
 			goto out;
 	}
 
-	/*
-	 * Set the operation flags early so that bio_iov_iter_get_pages
-	 * can set up the page vector appropriately for a ZONE_APPEND
-	 * operation.
-	 */
 	bio_opf = iomap_dio_bio_opflags(dio, iomap, use_fua, atomic);
 
 	nr_pages = bio_iov_vecs_to_alloc(dio->submit.iter, BIO_MAX_VECS);