Hi there, Taiwah. Thanks for raising your concern here.
There are two ways to remove a Payment method item, temporarily remove it from a specific transaction and permanently make it inactive. We're more than happy to guide you on how to do it.
To temporarily remove it from a specific transaction, uncheck the Online payments box beside the Customer email field.
See the screenshot below for reference:

To permanently inactivate the item, go to the Payment Methods section in the All lists tab. Here's how:
- Go to the Gear icon, then select All lists in the LISTS column.
- Choose the Payment Methods.
- Besides the payment method item, click the dropdown icon below the ACTION column.
- Pick Make inactive.

Below are articles you can use to manage your customer payments in the future:
Feel free to come back here if you have additional questions. We'll answer you as soon as we read your post. Keep safe, and have a good one!