Who knew Upper West Side movie stars were such party poopers? Matt Dillon showed up at a community-board liquor-license hearing Wednesday to complain about a restaurant he claims has “a night club vibe” moving next door to his apartment building. He was dressed “like a random wing nut, and we get a lot of those,” one board member said. “No one knew who he was until he spoke up. He was wearing a little porkpie hat and sunglasses — at 8 p.m.! This is an Upper West Side community board, not a downtown club,” the board member told The Post’s Jennifer Gould Keil. Gum-chewing Dillon spoke out against Calle Ocho, which plans to move from Columbus Avenue to 45 W. 81st St., previously home to Ed Brown‘s Eighty-One. Dillon complained that Calle Ocho had “more of a bar crowd.” CB 7 Vice Chair Marc Glazer told us, “His neighbors seemed to think that his star presence would help their cause, but it did not impress the board.” CB 7 is to vote on the license next month.