Revert "fix unused vesa_mode."

This reverts commit c229128db0e5ddc9387db96cf883e5c9984a78ea.
Revert "fix unused vesa_mode_table."

This reverts commit c45d5fea54c42521a07c3f9c4b91ea6081b55fde.
Revert "add #ifdef MODULE to avoid unused code."

This reverts commit e367335538704c75d01dcdbaad429fecfa1c9d9e.