refactor(bot): ⚰️ Remove dead code.

payphone/db/utils.py

@@ -5,12 +5,11 @@ import discord
 from payphone.db import models
 
 
-async def get_channel(channel: discord.TextChannel, for_update: bool = False) -> models.Channel:
+async def get_channel(channel: discord.TextChannel) -> models.Channel:
     """Returns a channel from the database, creating or updating it if it already exists.
 
     Args:
         channel (discord.TextChannel): The channel to fetch.
-        for_update (bool, optional): Whether the select should be FOR UPDATE or not.
 
     Returns:
         models.Channel: The channel row.