Java 8 cleanup pom.xml

Removing comment stating version coupling for dependency related to java
7.  No longer an issue, from what I have been able to test.

Author: jeremiahjstacey

pom.xml

@@ -537,7 +537,6 @@
                   <dependency>
                     <groupId>org.codehaus.mojo</groupId>
                     <artifactId>animal-sniffer-enforcer-rule</artifactId>
-                    <!-- Updating to 1.19 causes LOTS of errors in 'mvn site' and 1.18 requires Java 8 so leaving it at 1.17. -->
                     <version>1.20</version>
                   </dependency>