Don't read .env from within Python

Docker already puts the contents of .env in the environment.

bookwyrm/settings.py

@@ -1,4 +1,5 @@
 """ bookwyrm settings and configuration """
+
 import os
 from typing import AnyStr
 
@@ -13,7 +14,6 @@ from django.core.exceptions import ImproperlyConfigured
 # pylint: disable=line-too-long
 
 env = Env()
-env.read_env()
 DOMAIN = env("DOMAIN")
 
 with open("VERSION", encoding="utf-8") as f:

bookwyrm/wsgi.py

@@ -8,11 +8,8 @@ https://docs.djangoproject.com/en/2.0/howto/deployment/wsgi/
 """
 
 import os
-from environs import Env
 from django.core.wsgi import get_wsgi_application
 
-Env.read_env()
-
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "bookwyrm.settings")
 
 application = get_wsgi_application()

manage.py

@@ -2,10 +2,7 @@
 import os
 import sys
 
-from environs import Env
-
 if __name__ == "__main__":
-    Env.read_env()  # load environment variables from .env
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "bookwyrm.settings")
     try:
         from django.core.management import execute_from_command_line