refactor: remove own sniffs from ruleset (#125)

Author: simPod

src/Cdn77/ruleset.xml

@@ -39,9 +39,6 @@
         <exclude name="SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingTraversableTypeHintSpecification" />
     </rule>
 
-    <rule ref="Cdn77.NamingConventions.ValidConstantName"/>
-    <rule ref="Cdn77.NamingConventions.ValidVariableName"/>
-
     <rule ref="SlevomatCodingStandard.Classes.ClassStructure">
         <properties>
             <property name="groups" type="array" value="