Unable to delete multi-select attribute from attribute group

Hello, we created a multi-select attribute in a attribute group by mistake and we we need to delete it, but we are getting this error:

ERROR:

You cannot delete a segment with a multiple select list of values display type. (FND-3073)

In application 10,010, descriptive flexfield EGO_ITEM_EFF, and context Common Details, the multiple select list of values segment Test1 cannot be deleted