refactor(compiler): remove all source-level traces to tsc-wrapped (#18966)

- temporarily keeps the old sources under packages/tsc-wrapped
  until the build scripts are changed to use compiler-cli everywhere.
- removes the compiler options `disableTransformerPipeline` that was introduced
  in a previous beta of Angular 5, i.e. the transformer based compiler
  is now always enabled.

PR Close #18966

packages/compiler-cli/integrationtest/test/test_summaries.ts

@@ -15,7 +15,7 @@ import * as path from 'path';
 import * as ts from 'typescript';
 import * as assert from 'assert';
 import {tsc} from '@angular/tsc-wrapped/src/tsc';
-import {AngularCompilerOptions, CodeGenerator, CompilerHostContext, NodeCompilerHostContext} from '@angular/compiler-cli';
+import {CompilerOptions, CodeGenerator, CompilerHostContext, NodeCompilerHostContext} from '@angular/compiler-cli';
 
 /**
  * Main method.
@@ -89,7 +89,7 @@ function main() {
  * Simple adaption of tsc-wrapped main to just run codegen with a CompilerHostContext
  */
 function codegen(
-    config: {parsed: ts.ParsedCommandLine, ngOptions: AngularCompilerOptions},
+    config: {parsed: ts.ParsedCommandLine, ngOptions: CompilerOptions},
     hostContextFactory: (host: ts.CompilerHost) => CompilerHostContext) {
   const host = ts.createCompilerHost(config.parsed.options, true);