"and the level is not there either"
Are you sure? Something being commented out but left in the demo/beta is probably going to be more common than something being commented out but left in the final release. Bust out that tile editor and have a look.
Otherwise yeah then creative reinterpretation*, hoping it is in some other version (that cross grave stone might have bothered that era of Nintendo, Sega or arcade could be a different matter), hoping the asset got repurposed (a la mario cloud and bush or in another thing, or used in a later game).
Afraid I have not looked into Mortal Kombat tools to know what goes for background editing (most of any fighting game tending to be concerned with characters and moves), though if you already know where such things are located then basic tile editing is not glamorous but it will allow you to get it done.
*even ignoring the picture there being taken with possibly a late 90s mobile phone you also have it being at a jaunty angle which makes it more fun still.