Having drawn it all out on paper, it looks like what you want to do is remove the entrance porch light & its associated switches. Or do you want to keep the entrance porch light and connect it so that it comes on together with the hall light?
That will leave a 1 gang 1 way switch by the door for the outside light, and a 2 gang switch for the hall (2 way with the existing untouched switch at the other end of the hall) and toilet.
Are we to assume the hall/ toilet switch is being recessed where the stud wall was (ie not re-siting that switch)?
So, it is a case of identifying, disconnecting and removing the switch wiring (or connecting all cores to ground) then fixing the hall/ toilet switch box and recessing the wiring.