/* Remove Vote Button for Guest */
function remove_vote_for_guest() {
	if ( ! is_user_logged_in() ) {
	?>
		<style id="wpdiscuz" scoped>
			.wpd-comment-footer .wpd-vote {
				display: none !important;
			}
		</style>
	<?php
	}
}

add_action( 'init', 'remove_vote_for_guest' );