cleanup: Remove empty leading/trailing lines in blocks

gjs added a new rule to its eslint ruleset that forbids "block padding",
so make sure we conform to that rule before syncing up the configuration.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1498

js/ui/workspaceSwitcherPopup.js

@@ -172,7 +172,6 @@ class WorkspaceSwitcherPopup extends St.Widget {
                 indicator = new St.Bin({ style_class: 'ws-switcher-box' });
 
             this._list.add_actor(indicator);
-
         }
 
         let workArea = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);