Cyborg being a JL founder was erased before No Justice. In one issue of Priest's JL, he claimed to be a founder and that the League was formed five years ago. Next issue, it's now 15 years ago. Then No Justice revealed that Martian Manhunter was a founder instead. Cyborg is no longer a JL founder. They just need to handwave his origin in the first arc of New 52 JL as being an upgrade instead.