Fix author not getting removed at quote index removal

bot.py

@@ -335,6 +335,10 @@ async def quote_remove_command(ctx: commands.Context, author: str, quote: str):
             try:
                 quote = int(quote)
                 quotes[author].pop(quote)
+                if not quotes[author]:
+                    quotes.pop(author)
+                await ctx.channel.send("Successfully removed quote!")
+                config_save()
                 return
             except ValueError:
                 pass