Exclude unused PMD rule

Author: xxlabaza

.codestyle/pmd.xml

@@ -70,6 +70,7 @@ limitations under the License.
     <exclude name="MissingBreakInSwitch" />
   </rule>
   <rule ref="category/java/multithreading.xml">
+    <exclude name="AvoidUsingVolatile" />
   </rule>
   <rule ref="category/java/performance.xml">
     <exclude name="AvoidUsingShortType" />