docs(README): Fix composer commands now that the phpcs installer is a direct dependency (#3260071 by victoria-marina)

Author: victoria-marina

README.md

@@ -35,18 +35,13 @@ bin path to your `$PATH` variable in `~/.profile`, `~/.bashrc` or `~/.zshrc`:
 
  export PATH="$PATH:$HOME/.composer/vendor/bin"
 
-Register the Drupal and DrupalPractice Standard with PHPCS:
-
- phpcs --config-set installed_paths ~/.composer/vendor/drupal/coder/coder_sniffer
-
 
 ### Composer Installer Plugins
 
 The Coder package (>= 8.2.11) now works with Composer Installer Plugins,
 that find and register standards whenever packages are installed or updated.
 To use such a plugin within your project, follow these steps.
 
- composer require --dev dealerdirect/phpcodesniffer-composer-installer
  composer require --dev drupal/coder
 
 Now, you will see Drupal and DrupalPractice listed in the available PHP
@@ -56,7 +51,6 @@ CodeSniffer standards.
 
 The same can be done for a Composer global installation.
 
- composer global require dealerdirect/phpcodesniffer-composer-installer
  composer global require drupal/coder