apparmor: Fix smatch warning in aa_remove_profiles

smatch reports
  error: potential NULL dereference 'ns'.

this can not actually occur because it relies on aa_split_fqname setting
both ns_name and name as null but ns_name will actually always have a
value in this case.

so remove the unnecessary if (ns_name) conditional that is resulting
in the false positive further down.
Signed-off-by: John Johansen <john.johansen@canonical.com>

security/apparmor/policy.c

@@ -1156,7 +1156,6 @@ ssize_t aa_remove_profiles(char *fqname, size_t size)
 	if (fqname[0] == ':') {
 		char *ns_name;
 		name = aa_split_fqname(fqname, &ns_name);
-		if (ns_name) {
 		/* released below */
 		ns = aa_find_namespace(root, ns_name);
 		if (!ns) {
@@ -1164,7 +1163,6 @@ ssize_t aa_remove_profiles(char *fqname, size_t size)
 			error = -ENOENT;
 			goto fail;
 		}
-		}
 	} else
 		/* released below */
 		ns = aa_get_namespace(root);