Mayor Adams said Saturday he won’t be able to assist the feds with President-elect Donald Trump’s massive deportation plan because of NYC’s status as a sanctuary city. “The law is the law,” declared Adams, when asked by The Post whether the NYPD and the rest of his administration will cooperate with the U.S. Immigration and Customs Enforcement in its multi-day ground operations that sources said will begin next week in Chicago and then expand to other cities serving as safe havens for illegal migrants like NYC, San Diego and Denver. “I answered that over and over again. I’m not going...