Revert "Pickup commons.javadoc.version from parent POM"

This reverts commit b70093574020cfe8af035e562e184d77e278fafe.
diff --git a/pom.xml b/pom.xml
index 0d24d92..276d71f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -108,6 +108,11 @@
     </site>
   </distributionManagement>
   <properties>
+    <!-- TEMP HACK START -->
+    <!-- Something is broken in 3.11.3, see Maven user mailing list. -->
+    <commons.javadoc.version>3.11.2</commons.javadoc.version>
+    <!-- TEMP HACK END -->
+
     <heapSize>-Xmx512m</heapSize>
     <extraArgs/>
     <systemProperties/>