The judge overseeing Donald Trump’s Florida classified documents criminal case is expected to determine Friday the validity of charges that say two of Trump’s co-defendants obstructed the investigation into the case. The co-defendants, Walt Nauta and Carlos De Oliveira, are accused of conspiring to help Trump hide documents at Mar-a-Lago and lying to FBI investigators about their actions. Nauta, who worked as Trump’s personal valet, and De Oliveira, who has worked as property manager at Mar-a-Lago, have pleaded not guilty to obstruction, while Trump has pleaded not guilty to charges related to…