feat(@schematics/angular): update migration to remove deprecated environment option

Author: alan-agius4

packages/schematics/angular/migrations/migration-collection.json

@@ -110,15 +110,15 @@
       "factory": "./update-11/replace-ng-packagr-builder",
       "description": "Replace deprecated library builder '@angular-devkit/build-ng-packagr'."
     },
-    "update-angular-config-v11": {
-      "version": "11.0.0-next.0",
-      "factory": "./update-11/update-angular-config",
-      "description": "Remove deprecated options from 'angular.json' that are no longer present in v11."
-    },
     "add-declaration-map-compiler-option": {
       "version": "11.0.0-next.2",
       "factory": "./update-11/add-declaration-map-compiler-option",
       "description": "Add 'declarationMap' compiler options for non production library builds."
+    },
+    "update-angular-config-v11": {
+      "version": "11.0.0-next.5",
+      "factory": "./update-11/update-angular-config",
+      "description": "Remove deprecated options from 'angular.json' that are no longer present in v11."
     }
   }
 }

packages/schematics/angular/migrations/update-11/update-angular-config.ts

@@ -14,6 +14,7 @@ export default function (): Rule {
   return updateWorkspace(workspace => {
 
     const optionsToRemove: Record<string, undefined> = {
+      environment: undefined,
       extractCss: undefined,
       tsconfigFileName: undefined,
     };