Remove remnants of file based config

backend/app.py

@@ -248,7 +248,6 @@ def admin():
 def activate_job():
     helpers.load_dbconfig(app)
     helpers.load_version(app)
-    helpers.create_data_directory()
     database.create_entry_table()
     database.create_song_table()
     database.create_done_song_table()

backend/helpers.py

@@ -8,15 +8,6 @@ from functools import wraps, update_wrapper
 from datetime import datetime
 import database
 
-data_directory = "data"
-config_file = data_directory+"/config.json"
-
-
-def create_data_directory():
-    if not os.path.exists(data_directory):
-        os.makedirs(data_directory)
-
-
 def get_catalog_url():
     r = requests.get('https://www.karafun.de/karaoke-song-list.html')
     soup = BeautifulSoup(r.content, 'html.parser')