message: docs: remove speeding update ngcc section
  In version 9.1, this is no longer needed as in the CLI, NGCC async has been integrated which will run during `ng build/ng serve/ng test`.
  Reference:
  PR Close
diff: @@ -43,29 +43,6 @@ CLI commands run `ngcc` as needed when performing an Angular build.
  For more information on how to publish libraries see [Publishing your Library](guide/creating-libraries#publishing-your-library).
  -{@a speeding-up-ngcc-compilation}
  -### Speeding up ngcc compilation
  -
  -The standalone `ngcc` program can run in parallel over your third party modules, making it more efficient than letting Angular CLI run it as needed.
  -
  -You can run `ngcc` after each installation of node_modules by adding a `postinstall` [npm script](https://docs.npmjs.com/misc/scripts):
  -
  -<code-example language="json" header="package.json">
  -{
  - "scripts": {
  - "postinstall": "ngcc --properties es2015 browser module main --first-only --create-ivy-entry-points"
  - }
  -}
  -</code-example>
  -
  -<div class="alert is-important">
  -
  -The `postinstall` script will run on every installation of `node_modules`, including those performed by `ng update` and `ng add`.
  -
  -If you perform multiple installs in a row, this can end up being slower than letting Angular CLI run `ngcc` on builds.
  -
  -</div>
  -
  {@a maintaining-library-compatibility}
  ### Maintaining library compatibility
  @@ -92,7 +69,8 @@ You can run `ngcc` after each installation of node_modules by adding a `postinst
  <div class="alert is-important">
  -Don't use `--create-ivy-entry-points` as this will cause Node not to resolve the Ivy version of the packages correctly.
  + * The `postinstall` script will run on every installation of `node_modules`, including those performed by `ng update` and `ng add`.
  + * Don't use `--create-ivy-entry-points` as this will cause Node not to resolve the Ivy version of the packages correctly.
  </div>
  