staging: vt6655: Delete upc.h

Delete upc.h as all macros have been removed from upc.h.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/b553095c618e7885af5c3e42f9b9b39d95127a44.1653203927.git.philipp.g.hortmann@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>