Remove leftover debug logging in message handler

logger.error(current_model) fired on every incoming message and
spammed the error log with the model name; the accompanying
'# What is this? ^^^' note was dead. Drop both; the vision
auto-switch logic is unchanged.

bot/bot.py

@@ -460,10 +460,6 @@ async def message_handle(update: Update, context: CallbackContext, message=None,
 
     async with user_semaphores[user_id]:
         if current_model == "gpt-4-vision-preview" or current_model == "gpt-4o" or update.message.photo is not None and len(update.message.photo) > 0:
-
-            logger.error(current_model)
-            # What is this? ^^^
-
             if current_model != "gpt-4o" and current_model != "gpt-4-vision-preview":
                 current_model = "gpt-4o"
                 db.set_user_attribute(user_id, "current_model", "gpt-4o")