Remove enableRSS config param for maven-checkstyle-plugin

See hazelcast/hazelcast#24738 etc, removed in apache/maven-checkstyle-plugin#117

Author: JackPGreen

pom.xml

@@ -278,7 +278,6 @@
                             <configLocation>${checkstyle.configLocation}</configLocation>
                             <suppressionsLocation>${checkstyle.supressionsLocation}</suppressionsLocation>
                             <headerLocation>${checkstyle.headerLocation}</headerLocation>
-                            <enableRSS>false</enableRSS>
                             <linkXRef>false</linkXRef>
                             <consoleOutput>true</consoleOutput>
                             <failsOnError>true</failsOnError>