You can remove it from the database. I will provide examples using Magerun2.
1 - Admin user
Access your database and list the admin users, and find your admin user ID there.
2 - Find the data
Run this command below to enter into the DB.
Then get the list of UI Bookmarks that you have saved in the DB using this command.
SELECT 'namespace' FROM ui_bookmark;
3 - Remove it
Then remove the data saved to the product grid according to your admin user ID, my admin user ID is 3 so I ran these commands below.
DELETE FROM ui_bookmark WHERE user_id='3' AND namespace='product_listing';
DELETE FROM ui_bookmark WHERE user_id='3' AND namespace='product_attributes_grid';