Drop commented includes

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Remove duplicate includes

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Use angular brackets for system includes

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Use proper case for includes

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>