Remove old Python 2 syntax in super() calls

src/engineio/async_drivers/eventlet.py

@@ -9,7 +9,7 @@
 class WebSocketWSGI(_WebSocketWSGI):
     def __init__(self, handler, server):
         print(server.max_http_buffer_size)
-        super(WebSocketWSGI, self).__init__(
+        super().__init__(
             handler, max_frame_length=int(server.max_http_buffer_size))
         self._sock = None
 
@@ -19,7 +19,7 @@ def __call__(self, environ, start_response):
                                'See the Deployment section of the '
                                'documentation for more information.')
         self._sock = environ['eventlet.input'].get_socket()
-        return super(WebSocketWSGI, self).__call__(environ, start_response)
+        return super().__call__(environ, start_response)
 
 
 _async = {

src/engineio/async_drivers/gevent.py

@@ -16,7 +16,7 @@ class Thread(gevent.Greenlet):  # pragma: no cover
     with the standard library's Thread class.
     """
     def __init__(self, target, args=[], kwargs={}):
-        super(Thread, self).__init__(target, *args, **kwargs)
+        super().__init__(target, *args, **kwargs)
 
     def _run(self):
         return self.run()

src/engineio/async_drivers/gevent_uwsgi.py

@@ -12,7 +12,7 @@ class Thread(gevent.Greenlet):  # pragma: no cover
     with the standard library's Thread class.
     """
     def __init__(self, target, args=[], kwargs={}):
-        super(Thread, self).__init__(target, *args, **kwargs)
+        super().__init__(target, *args, **kwargs)
 
     def _run(self):
         return self.run()

src/engineio/middleware.py

@@ -83,5 +83,4 @@ class Middleware(WSGIApp):
     """This class has been renamed to ``WSGIApp`` and is now deprecated."""
     def __init__(self, engineio_app, wsgi_app=None,
                  engineio_path='engine.io'):
-        super(Middleware, self).__init__(engineio_app, wsgi_app,
-                                         engineio_path=engineio_path)
+        super().__init__(engineio_app, wsgi_app, engineio_path=engineio_path)