staging: vt6655: replace C99 comments wtih C89 comments

This patch replaces C99 comments with /* .. */ comments. Any commented
code is deleted.
Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Reviewed-by: Lisa Nguyen <lisa@xenapiadmin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>