I removed mine completely. And I moved the excerpt back where it belong too (under the title), and i killed the preview, and and and ..
You dont say what version you are using, however for 2.2:
delete this from wp-admin/edit-form-advanced.php
<?php
if (current_user_can('upload_files')) {
$uploading_iframe_ID = (0 == $post_ID ? $temp_ID : $post_ID);
$uploading_iframe_src = wp_nonce_url("upload.php?style=inline&tab=upload&post_id=$uploading_iframe_ID", 'inlineuploading');
$uploading_iframe_src = apply_filters('uploading_iframe_src', $uploading_iframe_src);
if ( false != $uploading_iframe_src )
echo '<iframe id="uploading" frameborder="0" src="' . $uploading_iframe_src . '">' . __('This feature requires iframe support.') . '</iframe>';
}
?>
done.
its pretty much the same across all three of the recent releases, 2.0.x, 2.1.x and 2.2.x, that bit above should point you in the right direction.