Removed legacy and improved documentation

cogs/analytics.py

@@ -16,11 +16,13 @@ class Analytics(commands.Cog):
 
     @Cog.listener()
     async def on_message(self, message: Message) -> None:
+        """Listener that collects analytical data (stickers, attachments, messages)."""
         if (
             (message.author != self.client.user)
             and (message.author.bot is False)
             and (message.author.system is False)
         ):
+            # Handle stickers
             stickers: List[Dict[str, Any]] = []
 
             for sticker in message.stickers:
@@ -33,6 +35,7 @@ class Analytics(commands.Cog):
                     }
                 )
 
+            # Handle attachments
             attachments: List[Dict[str, Any]] = []
 
             for attachment in message.attachments:
@@ -49,6 +52,7 @@ class Analytics(commands.Cog):
                     }
                 )
 
+            # Insert entry into the database
             await col_analytics.insert_one(
                 {
                     "user": message.author.id,