[WW-5141] Removes deprecated plugins (#798)

* WW-5141

- remove portlet

* WW-5141

- remove "pell multipart plugin"

* WW-5141

- remove code for "pell multipart plugin"

* WW-5141

-  remove dwr plugin

* WW-5141

- remove dwr plugin code

* WW-5141

- remove "dwr" from "struts-showcase"

* WW-5141

- remove references to "oval plugin" (removed)

* WW-5141

- remove dwr from struts-showcase

apps/showcase/pom.xml

@@ -233,7 +233,7 @@
                     </httpConnector>
                     <scanIntervalSeconds>10</scanIntervalSeconds>
                     <webAppSourceDirectory>${basedir}/src/main/webapp/</webAppSourceDirectory>
-                    <webApp>                      
+                    <webApp>
                       <extraClasspath>
                         ${project.build.directory}/extraclasspath/struts2-freemarker-jakarta.jar,
                         ${project.build.directory}/extraclasspath/struts2-sitemesh2-jakarta.jar,

apps/showcase/src/main/webapp/WEB-INF/web.xml

@@ -137,7 +137,7 @@
         <servlet-class>org.apache.struts2.showcase.servlet.TestServlet</servlet-class>
     </servlet>
 
-    <servlet-mapping>
+   <servlet-mapping>
         <servlet-name>sitemesh-freemarker</servlet-name>
         <url-pattern>*.ftl</url-pattern>
     </servlet-mapping>
@@ -157,8 +157,6 @@
         <url-pattern>/testServlet/*</url-pattern>
     </servlet-mapping>
 
-    <!-- END SNIPPET: dwr -->
-
     <!-- SNIPPET START: example.velocity.filter.chain
         <filter>
             <filter-name>struts-cleanup</filter-name>