Revert "Add a django middleware to cleanup db connections."

This ended up being useless because of the way startlette and fastapi do
thread pools. The middleware is called in one thread, the path in
another, and the dependency in yet another.

This reverts commit 473448246f.

etebase_fastapi/main.py

@@ -5,7 +5,6 @@ from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.middleware.trustedhost import TrustedHostMiddleware
 
-from .middleware import DjangoDbConnectionCleanupMiddleware
 from .exceptions import CustomHttpException
 from .msgpack import MsgpackResponse
 from .routers.authentication import authentication_router
@@ -43,7 +42,6 @@ def create_application(prefix="", middlewares=[]):
 
         app.include_router(test_reset_view_router, prefix=f"{BASE_PATH}/test/authentication")
 
-    app.add_middleware(DjangoDbConnectionCleanupMiddleware)
     app.add_middleware(
         CORSMiddleware,
         allow_origin_regex="https?://.*",

etebase_fastapi/middleware.py

@@ -1,15 +0,0 @@
-from starlette.types import ASGIApp, Receive, Scope, Send
-from django.db import close_old_connections, reset_queries
-
-
-class DjangoDbConnectionCleanupMiddleware:
-    def __init__(self, app: ASGIApp):
-        self.app = app
-
-    async def __call__(self, scope: Scope, receive: Receive, send: Send):
-        reset_queries()
-        close_old_connections()
-        try:
-            await self.app(scope, receive, send)
-        finally:
-            close_old_connections()