disabled jetty start plugin on jax-cxf sample

Author: HugoMario

samples/server/petstore/jaxrs-cxf/pom.xml

@@ -21,6 +21,7 @@
           </execution>
         </executions>
       </plugin>
+      <!--
       <plugin>
         <groupId>org.eclipse.jetty</groupId>
         <artifactId>jetty-maven-plugin</artifactId>
@@ -58,6 +59,7 @@
           </execution>
         </executions>
       </plugin>
+      -->
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>build-helper-maven-plugin</artifactId>