fix(phpcs config): Remove file extensions in rulesets because users c…

…annot overrride them (#3074176 by eiriksm)

README.md

@@ -64,15 +64,15 @@ The same can be done for a Composer global installation.
 
 Check Drupal coding standards
 
-    phpcs --standard=Drupal /file/to/drupal/example_module
+    phpcs --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md /file/to/drupal/example_module
 
 Check Drupal best practices
 
-    phpcs --standard=DrupalPractice /file/to/drupal/example_module
+    phpcs --standard=DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md /file/to/drupal/example_module
 
 Automatically fix coding standards
 
-    phpcbf --standard=Drupal /file/to/drupal/example_module
+    phpcbf --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md /file/to/drupal/example_module
 
 
 ## Store settings in a phpcs.xml.dist file

coder_sniffer/Drupal/ruleset.xml

@@ -5,8 +5,6 @@
  <!-- All Drupal code files must be UTF-8 encoded and we treat them as such. -->
  <arg name="encoding" value="utf-8"/>
 
- <arg name="extensions" value="php,module,inc,install,test,profile,theme,css,info,txt,md,yml"/>
-
  <autoload>autoload.php</autoload>
 
  <rule ref="Internal.NoCodeFound">

coder_sniffer/DrupalPractice/ruleset.xml

@@ -5,8 +5,6 @@
   <!-- All Drupal code files must be UTF-8 encoded and we treat them as such. -->
   <arg name="encoding" value="utf-8"/>
 
-  <arg name="extensions" value="php,module,inc,install,test,profile,theme,yml"/>
-
   <autoload>../Drupal/autoload.php</autoload>
 
   <rule ref="Internal.NoCodeFound">