Those panels are attached with finishing nails (see second photo). If you pry the panel away from the stud you may be able to get ahold of the nail head and pull them out. Then just slide the panel to the right or left until it’s no longer trapped behind pipes.

Note that you’ll still have to remove anything attached to the paneling, and if you can’t move the whole panel right or left you may need to cut it up. An oscillating cutter or even a dremel tool would be good to have.