VME: Remove node entry from vme_driver

The vme_driver structure currently has a "node" entry. This entry is
never used and it's intended purpose has been lost to the mists of time.

Remove the entry from vme_driver to avoid confusion.

Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>