Deleting Collection Attributes
There are two methods to delete a collection attribute.
Method One
Click edit to the left of the attribute you want to delete from within the Attributes tab.
Within the Edit Attribute screen, click Delete in the top-right corner of the window.
Clicking Delete will show a pop-up window, confirming that you want to delete the attribute. Note that once the attribute is deleted, it cannot be restored.
Method Two
Click the checkbox to the left of the attribute you want to delete in the Attributes tab. Multiple checkboxes can be selected this way.
After making your selection(s), click delete above the list of attributes.
Clicking Delete will show a pop-up window, confirming that you want to delete the attribute(s). Note that this action cannot be undone.