Remove "Display Name" duplication for numbered lists during export

When exporting the data from a numbered list field "Display name" is duplicated by a property that is selected as a displayed name. One of them should be removed as it adds additional clutter and confuses the customer. This would help to tidy and organize lists/number lists a lot better.

Currently it's confusing for end users since "Display name" system property stays along with the property that is appointed to be used as a displayed name. For example in the screenshot below the two identical properties are "Display name" and "Description"