I agree with the others.
On the left side as viewed from the camera, (which would be the right side of the points as they are 'handed' when standing at the toes looking towards them), you can see the baseplates for what would have been the switch rail are still mostly in situ, as there's no need to remove them. The running rail will most likely still be the original stock rail, as it's still fit for purpose. Its just the switch (moveable, thinner) rail that's been removed.
On the other side, this direction of travel would have been using the switch rail, which cannot remain in situ once the points have been decomissioned and the detection removed. Thus, the switch rail baseplates would have been replaced with with standard baseplates through this section.
The key thing is to remove the moveable rails, as the set of points will have been removed from the signalling system, and thus they are no longer being detected, so they cannot safety remain in track for any long period of time. Sure, they could be clamped, padlocked, and very regularly inspected, and that's sometimes used if they will remain for a week or so, but much longer and you need to do this kind of thing.
As for the crossing, there's no moveable components here, and no removed detection equipment (as there's nothing to detect), so there's no risk from just leaving this in situ. Thus, it's just left there.
At some point, this will be wholly removed from track and replaced with plain line, but this is a way of removing any significant time constraint on that happening. The biggest issue is that the crossing will still need to be inspected and possibly ground/weld repaired etc as per any other crossing, so it still has a higher maintenance requirement than plain line track, but it's a good compromise to allow a programme of works to leave something like this in place and come back at a later date when possessions and programme allows.