fix(@angular-devkit/build-angular): remove workaround for uglify-es (#12033)

Fix #11996 (comment)

Author: filipesilva

packages/angular_devkit/build_angular/src/angular-cli-files/models/webpack-configs/common.ts

@@ -229,10 +229,6 @@ export function getCommonConfig(wco: WebpackConfigOptions) {
       // PURE comments work best with 3 passes.
       // See https://github.com/webpack/webpack/issues/2899#issuecomment-317425926.
       passes: buildOptions.buildOptimizer ? 3 : 1,
-      // Workaround known uglify-es issue
-      // See https://github.com/mishoo/UglifyJS2/issues/2949#issuecomment-368070307
-      inline: wco.supportES2015 ? 1 : 3,
-
       global_defs: {
         ngDevMode: false,
       },