apps_activities is a dupe with overview_app_grid, kill it

Signed-off-by: Adam Williamson <awilliam@redhat.com>

lib/utils.pm

@@ -706,7 +706,7 @@ sub start_with_launcher {
         wait_still_screen 5;
 
         # Click on the menu icon to come into the menus
-        assert_and_click 'apps_activities';
+        assert_and_click 'overview_app_grid';
         wait_still_screen 5;
 
         # Find the application launcher in the current menu page. 

needles/gnome/apps/apps_activities.json

@@ -1,15 +0,0 @@
-{
-  "properties": [],
-  "tags": [
-    "apps_activities"
-  ],
-  "area": [
-    {
-      "xpos": 22,
-      "ypos": 612,
-      "width": 52,
-      "height": 54,
-      "type": "match"
-    }
-  ]
-}