NEW YORK — Mike Schneider, a principal anchor at Fox News Channel and the web’s chief political correspondent, has ankled the post after his contract wasn’t renewed.A Fox News spokesman confirmed that Schneider, who is on a planned vacation this week, will not return to “The Schneider Report” at 7 p.m. weekdays, which now will be retitled. John Scott is substituting this week and will remain interim anchor until a permanent replacement is named. “It will remain a hard news show but the format could change,” the spokesman said. Schneider, who has anchored and reported for ABC, NBC and WCBS New York, joined Fox News in January 1996 to cover politics for the broadcast network, and signed a new one-year deal last August that expires this week. But Fox Broadcasting never made good on promises to expand its news coverage and skipped extensive coverage of the presidential elections last year. Schneider instead segued to the cable news channel, which launched last October, but sources suggested he clashed with news execs, as when the anchor publicly complained about a mock news bulletin aired during the Super Bowl. Schneider couldn’t be reached for comment.