If you haven't done it already, pull the dresser on the right side out, remove the skirtings (pry bar/hammer) and cornices, then strip the plasterboard off the visible face of the wall (again pry bar/hammer). Once you can see the studwork under the PB you can see how it has been fixed to rhe walls and (possibly) kitchen units and hopefully how to remove it. It may require a recip saw, multitool, jigsaw or handsaw (or a xombination) to cut the timber framing around wiring and plumbing incorporated inside the wall (if any) free without damaging it