<p>It has <a href="http://meta.stackexchange.com/questions/12599/remove-vote-ui-elements-beside-own-question-and-answer-posts">been asked already</a> on the main Meta site (<a href="http://meta.stackexchange.com/questions/15616/why-are-the-buttons-for-voting-on-your-own-question-or-answer-visible?lq=1">several</a> <a href="http://meta.stackexchange.com/questions/52729/instead-of-you-cant-upvote-for-yourself-message-wouldnt-it-be-better-to-simp?lq=1">times</a>)... and declined by the Dev team. So I don't think it will change now. </p>

<p>You can find a <a href="http://meta.stackexchange.com/a/12708/132632">GreaseMonkey</a> script on the main question, if you want to remove them for yourself.</p>