Pressure?  Mike Brown scoffed at the notion.  Even if owner James Dolan said in January he felt the Knicks “absolutely” had to reach the NBA Finals and “should” win them, the first-year coach had that mindset all along after taking the job.  “People have talked about a mandate — like I’m coaching to win,” Brown said Tuesday. “It doesn’t matter what others say. I’m disappointed if we’re not in the Finals and having a chance to win it.” Mike Brown reacts on the sideline during the Knicks’ Game 1 blowout win over the 76ers. Charles Wenzelberg / New York Post They certainly look capable of getting to the NBA Finals now, after advancing in the playoffs for the fourth consecutive year in emphatic fashion and crushing the 76ers on Monday to start the Eastern Conference semifinal series.  The Knicks are hitting on all cylinders, the first team in NBA history to win three straight playoff games by at least 25 points.  When the Knicks moved on from Tom Thibodeau last spring after reaching the…