Remove most of Twitter code as Twitter's API access has been removed

src/application.py

@@ -1,12 +1,4 @@
 # -*- coding: utf-8 -*-
-import datetime
-
-# Make date check for feb 9.
-now = datetime.datetime.now()
-end_of_twitter = datetime.datetime(2023, 2, 13)
-twitter_support_enabled = True
-#if now >= end_of_twitter:
-#    twitter_support_enabled = False
 name = 'TWBlue'
 short_name='twblue'
 update_url = 'https://twblue.es/updates/updates.php'