WASHINGTON — The Supreme Court on Thursday heard two hours of historic arguments in a Colorado case to remove former President Donald Trump from the ballot. The justices sounded highly skeptical of the effort.It’s the first time that voters have tried to block a candidate from the presidency under a once-obscure post-Civil War constitutional provision barring those who “engaged in insurrection” from holding office.Some takeaways from the arguments:Trump seems likely to stay on ballotIn tone and …