test_virtual_fs.py: Remove unneeded imports and shebang.
-#!/usr/bin/env python
-
-from __future__ import absolute_import
-from __future__ import print_function
-
from zulip_bots.test_lib import BotTestCase
-from zulip_bots.lib import StateHandler
-
-from typing import Any
class TestVirtualFsBot(BotTestCase):
bot_name = "virtual_fs"
