Remove onmove and onmousewheel from window properties test
Neither have any support in specifications: see https://dontcallmedom.github.io/webidlpedia/members.html.
onmove does not appear in any browser. onmousewheel appears in Chromium and WebKit; see some discussion in w3c/uievents#331. Until that is resolved though it isn't good to test for its presence.