1970 Dodge Dart Heater/A-C Controls

1970 Dodge Dart Swinger
318 w/3 speed manual
Factory a/c
Question about heater/a-c controls. I understand they work off of engine vacuum. I have (3) vacuum lines from heater/a-c box. Per my manual (1) vacuum line goes to engine vacuum(manifold). The other (2) go to Water Valve Assy. See Photo.
I am eliminating my a/c system. Can I bypass the Water Valve Assy. and use only (1) vacuum line to manifold to provide vacuum to controls?
Thanks,
Robert20210920_193519.jpg