flake8 fixes: unused imports and f-strings without vars

integration-tests/test_admin_installer.py

@@ -2,7 +2,6 @@ from hubtraf.user import User
 from hubtraf.auth.dummy import login_dummy
 import pytest
 from functools import partial
-import asyncio
 
 
 @pytest.mark.asyncio

integration-tests/test_extensions.py

@@ -1,4 +1,3 @@
-import os
 import subprocess
 
 

integration-tests/test_hub.py

@@ -8,7 +8,6 @@ from functools import partial
 import asyncio
 import pwd
 import grp
-import sys
 import subprocess
 from os import system
 from tljh.normalize import generate_system_username

integration-tests/test_proxy.py

@@ -12,7 +12,6 @@ import pytest
 from tljh.config import (
     reload_component,
     set_config_value,
-    unset_config_value,
     CONFIG_FILE,
     CONFIG_DIR,
     STATE_DIR,

integration-tests/test_simplest_plugin.py

@@ -84,7 +84,7 @@ def test_new_user_create():
     # Call ensure_user to make sure the user plugin gets called
     user.ensure_user(username)
 
-    with open(f"test_new_user_create") as f:
+    with open("test_new_user_create") as f:
         content = f.read()
 
     assert content == username