RESTCOMM-2064: Remove ExtensionContext injection

Author: abdulazizali77

restcomm/restcomm.extension.controller/src/main/java/org/restcomm/connect/extension/controller/ExtensionBootstrapper.java

@@ -20,7 +20,6 @@
  */
 package org.restcomm.connect.extension.controller;
 
-import org.restcomm.connect.extension.api.ExtensionContext;
 import org.restcomm.connect.extension.api.RestcommExtensionGeneric;
 import org.apache.commons.configuration.Configuration;
 import org.apache.commons.configuration.HierarchicalConfiguration;
@@ -44,7 +43,6 @@ public class ExtensionBootstrapper {
     public ExtensionBootstrapper(final ServletContext context, final Configuration configuration) {
         this.configuration = configuration;
         this.context = context;
-        this.context.setAttribute(ExtensionContext.class.getName(), ExtensionController.getInstance());
         ExtensionController.getInstance().init(this.context);
     }