Tables in the sample DB that I cannot find in Acumatica code repository

Here’s an easy one!  There are a couple tables I’ve found in the sample database that I cannot find in the Code Repository.  I’m wondering if they are legacy tables that are no longer used.

For example, EPEquipmentTimeSheetDetail and EPTimeSheetDetail.  

The only place I find them when searching the entire solution is in a file “Settings except Attachmments.esc”

    <Exclude  table="EPTimeSheetDetail" />
    <Exclude  table="EPEquipmentTimeSheetDetail" />
 

Are these “dead” files?