Remove dup xbps_cmpver_* func, use just the real one.

--HG--
extra : convert_revision : cde78bdcccc68bb865d5bd76a84c00055f451e96

bin/xbps-cmpver/main.c

@@ -17,5 +17,5 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	return xbps_cmpver_packages(argv[1], argv[2]);
+	return xbps_cmpver(argv[1], argv[2]);
 }