Hi,
Per your description, we understand you want to delete the column header of the data imported from the website. First, we would like to let you know when you import the data from the external sources into the Excel file, the imported data will be converted as Table and the first row of the content will be the table header. In order to delete the column header in the table, you need to remove the table and delete the header. And removing the table which means converting the table to range will lose the connection.
So, since you’re having only one column, you can uncheck the header row option:
Click on the table in the Worksheet> Table Design> Uncheck Header Row.
Appreciate your patience and understanding. Have a good day and stay safe 😊
Best Regards,
Chitrahaas