Not easily, not without damaging the walls. Under part of the dinette will be the wheel well box too, so the floor space gained won't be the whole area. I suspect there's an LP leak detector wired in there somewhere as well. You'd have holes in the floor too. Sure, they can be removed, but they usually need reconstruction after.
2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR