Revert the config split change

Revert the changes in a207d97 and 9a2efb3, at this moment, some code
relies on both settings from frontend and backend, and it's inconvenient
to run unittests with config split up to frontend only and backend
only.

module_build_service/__init__.py

@@ -18,9 +18,7 @@ for a number of tasks:
   infrastructure services can pick up the work.
 """
 
-import os.path
 import pkg_resources
-import sys
 from celery import Celery
 from flask import Flask, has_app_context, url_for
 from flask_sqlalchemy import SQLAlchemy
@@ -48,12 +46,7 @@ api_version = 2
 app = Flask(__name__)
 app.wsgi_app = ReverseProxy(app.wsgi_app)
 
-backend_commands = ("fedmsg-hub", "celery", "build_module_locally")
-if any([os.path.basename(arg).startswith(backend_commands) for arg in sys.argv]):
-    # running as backend
-    conf = init_config(app, backend=True)
-else:
-    conf = init_config(app)
+conf = init_config(app)
 
 celery_app = Celery("module-build-service")
 # Convert config names specific for Celery like this: