fix: Remove self

janine/utils.py

@@ -42,7 +42,7 @@ def format_time(time_str):
 
     return f'{date.day}.{date.month}.{date.year} {date.hour}:{date.minute}'
 
-def format_warning(self, warning):
+def format_warning(warning):
     '''
     Send a warning to all the recipients
     '''