SEC-509: removed clirr plugin declaration from maven build.

Also removed regexp javadoc link as it doesn't seem to be a project dependency any more.

pom.xml

@@ -426,9 +426,6 @@
 						<link>
 							http://logging.apache.org/log4j/docs/api/
 						</link>
-						<link>
-							http://jakarta.apache.org/regexp/apidocs/
-						</link>
 						<link>
 							http://jakarta.apache.org/velocity/api/
 						</link>
@@ -460,10 +457,6 @@
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>taglist-maven-plugin</artifactId>
 			</plugin>
-			<plugin>
-				<groupId>org.codehaus.mojo</groupId>
-				<artifactId>clirr-maven-plugin</artifactId>
-			</plugin>
 		</plugins>
 	</reporting>