You can remove the EVO from the pump but, to use the pump, you have to replace the EVO with a fitting, as shown in the attached document and referred to as "union fitting" (the document is from the GM EVO delete kit # 19168825). Once that fitting is in place, a high-pressure line from a non-EVO vehilcle can be used.
The U-shaped pipe shown in the attached (aka "EVO SOLENOID BYPASS TUBE") is only employed if one deletes the EVO and wants to use / retain the high-pressure line which is original on an EVO-equipped truck.
The document posted by GoToGuy is mostly relevant when a non-EVO pump's being used as a replacement on an EVO vehicle, i.e., the replacement pump
already has the "union fitting" and the vehicle already has the high-pressure line which is original on an EVO-equipped truck. That document specifically mentions the "EVO SOLENOID BYPASS TUBE" but makes no mention of the "union fitting". It DOES state "If you are replacing only the EVO valve and not the pump, you will need to order OEM GM Kit # 19168825". That kit contains BOTH the "union fitting" and the "EVO SOLENOID BYPASS TUBE".
Confused? You should be. But I "been there" and I "done this" and that's "how it is"