Fix flake8 warnings

activitypub.py

@@ -21,7 +21,6 @@ from config import PUBLIC_INSTANCES
 import tasks
 
 from typing import List, Optional, Dict, Any, Union
-from typing import TypeVar
 
 logger = logging.getLogger(__name__)
 

docker-compose-dev.yml

@@ -1,4 +1,4 @@
-version: '3'
+version: '2'
 services:
   celery:
     build: .

docker-compose-tests.yml

@@ -15,6 +15,7 @@ services:
      - MICROBLOGPUB_MONGODB_HOST=mongo:27017
      - MICROBLOGPUB_DEBUG=1
   celery:
+#    image: "instance1_web"
     build: .
     links:
      - mongo

docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3'
+version: '2'
 services:
   web:
     build: .