fix(autoload): Fix PHP Fatal error: ClassFilesSniff namespace clash (#3048092)

coder_sniffer/DrupalPractice/ruleset.xml

 <?xml version="1.0"?>
 <ruleset name="DrupalPractice">
- <description>Drupal best practice checks</description>
+  <description>Drupal best practice checks</description>
 
- <!-- All Drupal code files must be UTF-8 encoded and we treat them as such. -->
- <arg name="encoding" value="utf-8"/>
+  <!-- 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"/>
+  <arg name="extensions" value="php,module,inc,install,test,profile,theme,yml"/>
 
- <autoload>../Drupal/autoload.php</autoload>
- <!-- We use a static method from a sniff from the other standard, so we need
- this autoload hack here. -->
- <autoload>../Drupal/Sniffs/InfoFiles/ClassFilesSniff.php</autoload>
+  <autoload>../Drupal/autoload.php</autoload>
 
- <rule ref="Internal.NoCodeFound">
-  <!-- Empty files are fine, might be used for testing. -->
-  <exclude-pattern>*</exclude-pattern>
- </rule>
+  <rule ref="Internal.NoCodeFound">
+    <!-- Empty files are fine, might be used for testing. -->
+    <exclude-pattern>*</exclude-pattern>
+  </rule>
 
- <rule ref="DrupalPractice.CodeAnalysis.VariableAnalysis.UndefinedVariable">
-  <!-- Do not run this sniff on template files. -->
-  <exclude-pattern>*.tpl.php</exclude-pattern>
- </rule>
+  <rule ref="DrupalPractice.CodeAnalysis.VariableAnalysis.UndefinedVariable">
+    <!-- Do not run this sniff on template files. -->
+    <exclude-pattern>*.tpl.php</exclude-pattern>
+  </rule>
 
- <!-- Ignore various version control directories. -->
- <exclude-pattern>*/\.git/*</exclude-pattern>
- <exclude-pattern>*/\.svn/*</exclude-pattern>
- <exclude-pattern>*/\.hg/*</exclude-pattern>
- <exclude-pattern>*/\.bzr/*</exclude-pattern>
+  <!-- Ignore various version control directories. -->
+  <exclude-pattern>*/\.git/*</exclude-pattern>
+  <exclude-pattern>*/\.svn/*</exclude-pattern>
+  <exclude-pattern>*/\.hg/*</exclude-pattern>
+  <exclude-pattern>*/\.bzr/*</exclude-pattern>
 </ruleset>