wined3d: Don't validate the frontbuffer's DRAWABLE location in wined3d_swapchain_resize_buffers() when NO3D is set.

In general, NO3D surfaces are always in SYSMEM. More importantly though,
validating DRAWABLE will evict SYSMEM, but a subsequent
wined3d_texture_no3d_load_location() won't recreate it because it's always
supposed to be current. This fixes a regression introduced by commit
ebaa0a94, and exposed by running the ddraw
tests with the "no3d" renderer.