Disable scratch map layer by default

app/javascript/controllers/maps_controller.js

@@ -152,7 +152,7 @@ export default class extends Controller {
         color: '#FFA500',
         weight: 1
       }
-    }).addTo(this.map)
+    })
 
     const response = await fetch('https://raw.githubusercontent.com/datasets/geo-countries/master/data/countries.geojson')
     const worldData = await response.json()

app/views/map/index.html.erb

@@ -51,11 +51,6 @@
         <div data-maps-target="container" class="h-[25rem] w-full min-h-screen">
           <div id="fog" class="fog"></div>
         </div>
-        <button
-          data-action="click->maps#toggleScratchLayer"
-          class="btn btn-primary mt-4">
-          Toggle Visited Countries
-        </button>
       </div>
     </div>
   </div>