cleanup: Remove spaces in object literals

We only adopted this style relatively recently, so there's a bit
more to adjust. Still, it's manageable and another step towards
getting rid of the legacy style.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2866>

js/ui/remoteSearch.js

@@ -237,7 +237,7 @@ class RemoteSearchProvider {
         }
 
         if (gicon)
-            icon = new St.Icon({ gicon, icon_size: size });
+            icon = new St.Icon({gicon, icon_size: size});
         return icon;
     }