cleanup: Avoid unnecessary parentheses

Extra parentheses usually add noise rather than clarity, so avoid
them.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805

js/ui/remoteSearch.js

@@ -181,7 +181,7 @@ function loadRemoteSearchProviders(searchSettings, callback) {
             return -1;
 
         // finally, if both providers are found, return their order in the list
-        return (idxA - idxB);
+        return idxA - idxB;
     });
 
     callback(loadedProviders);