How to remove old light switches, leave circuit always on?
You also need to consider the Electrical Code, which absolutely requires a light switch in the expected location, and requires that the switch turn on a light.  (in some cases this can be a switched receptacle, but the homeowner is expected to fit a light there.) 

Why should light switches be required?  Why can't you choose to turn your lights on any way you please?  First responders. 


an EMT who needs to reach you right now
a fireman trying to find your child or pet
a SWAT team needing to see your hands do not contain a gun


If any of these guys have to pause to fiddle with lights, that might not go your way.