When setting up filters using the automated options, often the app may create filters that you do not want to show to customers. In this situation if you delete the filter it will come back after some time, this happens because the filters are being generated based on your product data.

In this situation, it is best to hide the filter, by clicking on the eye icon next to each filter. The filter will then be greyed out and will not be shown to your customers. Make sure you click 'Save and Update' after making these changes.

If you accidentally added the wrong type of filters to a group, you will also need to unlink the automated feature from that group before removing the filters, for Product type or Vendor filters, you'll need to disable the options in the 'Vendor/Type Filters' tab. And set them up again for the correct filter group you want them linked to.

For variant filters, like size or color, you'll need to disable the options in the 'Variant Option Filters' tab. And set them up again for the correct filter group you want them linked to.