docs: Remove outdated Webpack guide and example (#24478)

A supporting Webpack guide will be introduced as part of the guidance
for ejecting from the Angular CLI.

Closes #23937

PR Close #24478

aio/tools/example-zipper/README.md

@@ -25,7 +25,7 @@ The zipper will use this information for creating new zips.
 
 ## Three kinds of examples
 
-The majority of examples in AIO use `System.js` but there are also `CLI` and `Webpack` projects. This
+The majority of examples in AIO use `CLI`, with some additionally using `Webpack` and upgrade usiing `SystemJS`. This
 tool is able to differentiate between them.
 
 The boilerplate uses a `package.json` that contains packages and scripts to run any kind of example.
@@ -44,7 +44,6 @@ Here you find a:
 
 * **base.json** - All the common scripts and packages
 * **cli.json** - Extra scripts and packages for the CLI
-* **webpack.json** - Extra scripts and packages for Webpack
 * **universal.json** - Extra scripts and packages for universal
 * **i18n.json** - Extra scripts and packages for i18n
 * **systemjs.json** - All the System.js related packages but it also contains the remainder scripts
@@ -68,11 +67,11 @@ In both `stackblitz.json` and `zipper.json` you can use two extra properties for
 {
   ...
   "removeSystemJsConfig": true,
-  "type": "webpack"
+  "type": "testing"
 }
 ```
 
-This would generate a zip for a webpack application and it will also remove everything related with
+This would generate a zip for a testing application and it will also remove everything related with
 SystemJS.
 
 ## Executing the zip generation

aio/tools/example-zipper/customizer/package-json/webpack.json

@@ -1,26 +0,0 @@
-{
-  "scripts": [
-    { "name": "start:webpack", "rename": "start" },
-    { "name": "test:webpack", "rename": "test" },
-    { "name": "build:webpack", "rename": "build" }
-  ],
-  "dependencies": [],
-  "devDependencies": [
-    "angular2-template-loader",
-    "awesome-typescript-loader",
-    "css-loader",
-    "extract-text-webpack-plugin",
-    "file-loader",
-    "html-loader",
-    "html-webpack-plugin",
-    "karma-sourcemap-loader",
-    "karma-webpack",
-    "null-loader",
-    "raw-loader",
-    "rimraf",
-    "style-loader",
-    "webpack",
-    "webpack-dev-server",
-    "webpack-merge"
-  ]
-}

aio/tools/example-zipper/exampleZipper.js

@@ -113,7 +113,6 @@ class ExampleZipper {
       '!**/package.json',
       '!**/example-config.json',
       '!**/wallaby.js',
-      '!**/package.webpack.json',
       // AoT related files
       '!**/aot/**/*.*',
       '!**/*-aot.*'