ext4: remove unneeded code in ext4_unlink

Setting retval to zero is not needed in ext4_unlink.
Remove unneeded code.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 4262118..2291923 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2814,7 +2814,6 @@
 		ext4_orphan_add(handle, inode);
 	inode->i_ctime = ext4_current_time(inode);
 	ext4_mark_inode_dirty(handle, inode);
-	retval = 0;
 
 end_unlink:
 	brelse(bh);