Remove remaining JavaScript related to the GoogleMap API (#519)

app/javascript/controllers/application.js

@@ -6,13 +6,4 @@ const application = Application.start()
 application.debug = false
 window.Stimulus   = application
 
-// google map script tag calls this method via callback param when finished loading
-// this creates a custom event that is being listened to in the view to build map
-// without this google-map controller JS runs before google is available and fails
-window.initMap = () => {
-    console.log('initMap was called');
-    const event = new Event("MapLoaded", {"bubbles":true, "cancelable":false});
-    window.dispatchEvent(event)
-}
-
 export { application }