removed mention of sunxacml

pdp-io-xacml-json/pom.xml

@@ -103,7 +103,6 @@
             </executions>
          </plugin>
          <plugin>
-            <!-- Override license-maven-plugin configuration to exclude Sunxacml files from adding GPL license headers (different license) -->
             <groupId>com.mycila</groupId>
             <artifactId>license-maven-plugin</artifactId>
             <configuration>