Sometimes We need to remove the Attribute from already build Configurable product…As it is hard to remove but we can remove from MYSQL Raw Query …which against the Standard but if it is requried we can edit like this
To remove one super product attribute (as they are called) from all configurable products, you could execute this SQL query in the database:
DELETE FROM catalog_product_super_attribute WHERE attribute_id = “attribute ID which should be removed”
The table catalog_product_super_attribute links products to super product attributes. You can add and remove attributes to created configurable products there.