Problem deleting Discord.py positions

Question

I was taking a test and the next thing I knew, I was creating a lot of positions to do tests, only I tried to do it to erase and I couldn’t.

Does anyone have any idea how to help me?

@client.event
async def on_message(message):
    if message.content.lower().startswith("!start"):
        contador = 0
        while contador < 1:
            await message.guild.create_role(name='Teste')

@client.command
async def on_message(ctx, message):
    guild = ctx.guild

    if message.content.lower().startswith("!start2"):
        contador = 0
        while contador < 1:
            await message.guild.delete_role(name='Teste')