fix: bad indents were preventing config command group from working

shortmute/shortmute.py

@@ -1,8 +1,7 @@
-from datetime import datetime
 import discord
 from pytimeparse2 import disable_dateutil, parse
 from discord import ui
-from redbot.core import Config, commands, app_commands, modlog
+from redbot.core import Config, commands, app_commands
 
 class Shortmute(commands.Cog):
     """Allows staff members to shortmute individuals for up to 30 minutes, using Discord's Timeouts feature."""