remove this entry from under post…

edit functions.php from line 522; remove the references to ‘bookmark’:

function twentyten_posted_in() {
	// Retrieves tag list of current post, separated by commas.
	$tag_list = get_the_tag_list( '', ', ' );
	if ( $tag_list ) {
		$posted_in = __( 'This entry was posted in %1$s and tagged %2$s.', 'twentyten' );
	} elseif ( is_object_in_taxonomy( get_post_type(), 'category' ) ) {
		$posted_in = __( 'This entry was posted in %1$s.', 'twentyten' );
	} else {
		$posted_in = __( '', 'twentyten' );
	}
	// Prints the string, replacing the placeholders.
	printf(
		$posted_in,
		get_the_category_list( ', ' ),
		$tag_list,
		the_title_attribute( 'echo=0' )
	);
}

yay, thank you alchymyth!