fix alias checking for jetty 9.x

wise-webapp/webdefault.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="ISO-8859-1"?>
-<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
-        metadata-complete="false"
-        version="3.1">
-
-
-    <servlet>
-        <servlet-name>default</servlet-name>
-        <servlet-class>org.eclipse.jetty.servlet.DefaultServlet</servlet-class>
-        <init-param>
-            <param-name>aliases</param-name>
-            <param-value>true</param-value>
-        </init-param>
-    </servlet>
-</web-app>