btrfs: zoned: remove redundant condition in btrfs_run_delalloc_range

The logic !A || A && B is equivalent to !A || B. so we can
make code clear.

Note: though it's preferred to be in the more human readable form, there
have been repeated reports and patches as the expression is detected by
tools so apply it to reduce the load.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add note ]
Signed-off-by: David Sterba <dsterba@suse.com>

Author: Lotte-Bai

fs/btrfs/inode.c

@@ -2016,8 +2016,7 @@ int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page
 		 * to use run_delalloc_nocow() here, like for  regular
 		 * preallocated inodes.
 		 */
-		ASSERT(!zoned ||
-		       (zoned && btrfs_is_data_reloc_root(inode->root)));
+		ASSERT(!zoned || btrfs_is_data_reloc_root(inode->root));
 		ret = run_delalloc_nocow(inode, locked_page, start, end,
 					 page_started, nr_written);
 	} else if (!inode_can_compress(inode) ||