MAINTAINERS: update amphion vpu driver entry

Shijie has not been actively working on the driver,
his e-mail address is bouncing for quite awhile now.
remove him from the maintainer list here.
I do want to thank him for his work on the driver.

Signed-off-by: Zhou Peng <eagle.zhou@nxp.com>
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>