ecryptfs: remove unnecessary i_version bump

There is no need to bump the i_version counter here, as ecryptfs does
not set the SB_I_VERSION flag, and doesn't use it internally. It also
only bumps it when the inode is instantiated, which doesn't make much
sense.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>

fs/ecryptfs/inode.c

@@ -64,7 +64,6 @@ static int ecryptfs_inode_set(struct inode *inode, void *opaque)
 	/* i_size will be overwritten for encrypted regular files */
 	fsstack_copy_inode_size(inode, lower_inode);
 	inode->i_ino = lower_inode->i_ino;
-	inode->i_version++;
 	inode->i_mapping->a_ops = &ecryptfs_aops;
 
 	if (S_ISLNK(inode->i_mode))