removed unnecessary instance_variable_get from netzke_js helper
removed unnecessary instance_variable_get from netzke_js helper

citrininfo/netzke-core,Mahaswami/netzke-core,citrininfo/netzke-core,Mahaswami/netzke-core,citrininfo/netzke-core,citrininfo/netzke-core,Mahaswami/netzke-core