@angular/cli migration - drop-ie-polyfills

Remove polyfills required only for Internet Explorer which is no longer supported.

src/polyfills.ts

@@ -38,22 +38,11 @@ import '@angular/localize/init';
 // import 'core-js/es6/weak-map';
 // import 'core-js/es6/set';
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
-// import 'classlist.js';  // Run `npm install --save classlist.js`.
-
 /** Evergreen browsers require these. **/
 // import 'core-js/es6/reflect';
 
 
 
-/**
- * Required to support Web Animations `@angular/animation`.
- * Needed for: All but Chrome, Firefox and Opera. http://caniuse.com/#feat=web-animation
- **/
-// import 'web-animations-js';  // Run `npm install --save web-animations-js`.
-
-
-
 /***************************************************************************************************
  * Zone JS is required by Angular itself.
  */