Remove Polyfill.io

Author: Tam

src/fields/MapField.php

@@ -479,7 +479,6 @@ private function _renderMap (Map $value, bool $isSettings = false): string
 
 		$containerId = 'map-' . $this->id . 'container';
 		$vueContainerId = $view->namespaceInputId($containerId);
-		$view->registerJsFile('https://polyfill.io/v3/polyfill.min.js?flags=gated&features=default%2CIntersectionObserver%2CIntersectionObserverEntry');
 		$view->registerAssetBundle(MapAsset::class);
 		$view->registerJs('new Vue({ el: \'#' . $vueContainerId . '\' });');
 		$view->registerTranslations('simplemap', [