Pick up maven-pmd-plugin version from parent
diff --git a/pom.xml b/pom.xml
index 8a9ba19..0234f1f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -205,7 +205,6 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>3.19.0</version>
         <configuration>
           <targetJdk>1.5</targetJdk>
         </configuration>