Regardless how one feels about NY cancelling their primary presidential election, it will be up to

[still_one]

the DNC to determine if this conforms to the DNCs rules:

"The DNC said the change will also have to be reviewed. “Any substantive change to a state's first determining step in allocating delegates like this one will need to be reviewed by the DNC's Rules and By-Laws Committee,” DNC spokesperson David Bergstein said in a statement. “Once the state party submits an updated delegate selection plan, the committee will review that plan and make a determination"

https://www.politico.com/news/2020/04/27/sanders-delegates-tougher-after-new-york-cancels-primary-212067