refactor: apply new eslint rules

src/app/app.component.ts

@@ -66,7 +66,6 @@ export class AppComponent {
    * TODO
    */
   async initializeApp() {
-    // tslint:disable-next-line: no-floating-promises
     this.platform.ready().then(async () => {
       // Okay, so the platform is ready and our plugins are available.
       // Here you can do any higher level native things you might need.