You can put a plug in the hole for the reservoir. I deleted mine when I did my 1M front end.
This is what I used, just pulled the front pump out of the res and pushed one of these in the hole. Obviously the headlight washers have been coded out. This way the whole front washer system is physically deleted.
https://www.lowes.com/pd/SharkBite-5...E&gclsrc=aw.ds