selinux: remove secondary ops call to sb_mount

Remove secondary ops call to sb_mount, which is
a noop in capabilities.

Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

security/selinux/hooks.c

@@ -2531,11 +2531,6 @@ static int selinux_mount(char *dev_name,
 			 void *data)
 {
 	const struct cred *cred = current_cred();
-	int rc;
-
-	rc = secondary_ops->sb_mount(dev_name, path, type, flags, data);
-	if (rc)
-		return rc;
 
 	if (flags & MS_REMOUNT)
 		return superblock_has_perm(cred, path->mnt->mnt_sb,