chore: remove unused code

Author: ghiscoding

packages/demo/src/getting-started.ts

@@ -1,10 +1 @@
-import { multipleSelect } from 'multiple-select-vanilla';
-
-export default class Example {
-  mount() {
-    multipleSelect('#select1');
-    multipleSelect('#select2', {
-      placeholder: 'Here is the placeholder via javascript',
-    });
-  }
-}
+export default class Example {}