gateway: remove an unused import

Author: bluetech

src/execnet/gateway.py

@@ -7,24 +7,19 @@
 
 import inspect
 import linecache
-import os
 import textwrap
 import types
 from typing import TYPE_CHECKING
 from typing import Any
 from typing import Callable
 
-import execnet
-
 from . import gateway_base
 from .gateway_base import IO
 from .gateway_base import Channel
 from .gateway_base import Message
 from .multi import Group
 from .xspec import XSpec
 
-importdir = os.path.dirname(os.path.dirname(execnet.__file__))
-
 
 class Gateway(gateway_base.BaseGateway):
     """Gateway to a local or remote Python Interpreter."""