Unregisters a previously registered message handler in script world with name @world_name.
Note that this does *not* disconnect handlers for the
#WebKitUserContentManager::script-message-received signal;
they will be kept connected, but the signal will not be emitted
unless the handler name is registered again.
See also webkit_user_content_manager_register_script_message_handler_in_world().
Unregisters a previously registered message handler in script world with name @world_name.
Note that this does *not* disconnect handlers for the #WebKitUserContentManager::script-message-received signal; they will be kept connected, but the signal will not be emitted unless the handler name is registered again.
See also webkit_user_content_manager_register_script_message_handler_in_world().