refactor: remove unused v12 code

Author: ocombe

angular/devkit/ng-compat/build-angular/browser-schema.ts

@@ -1,8 +1,3 @@
 /* eslint-disable */
-import { VERSION } from '@angular/cli';
 
-export let BrowserBuilderSchema: any;
-
-if (Number(VERSION.major) > 12) {
-  BrowserBuilderSchema = require('@angular-devkit/build-angular/src/builders/browser/schema').Schema;
-}
+export let BrowserBuilderSchema = require('@angular-devkit/build-angular/src/builders/browser/schema').Schema;

angular/devkit/ng-compat/build-angular/server-schema.ts

@@ -1,9 +1,5 @@
 /* eslint-disable */
-import { VERSION } from '@angular/cli';
 import { json } from '@angular-devkit/core';
 
-
-export let normalizeCacheOptions: (metadata: json.JsonObject, worspaceRoot: string) => any;
-if (Number(VERSION.major) > 12) {
-  normalizeCacheOptions = require('@angular-devkit/build-angular/src/utils/normalize-cache').normalizeCacheOptions;
-}
+export let normalizeCacheOptions: (metadata: json.JsonObject, worspaceRoot: string) => any
+  = require('@angular-devkit/build-angular/src/utils/normalize-cache').normalizeCacheOptions;