Staging: pata_rdc: remove DRIVER macros

They are not needed, and the version one was pointless now that the code
is merged into the tree.

Cc: Kevin Huang  <Kevin.Huang@rdc.com.tw>
Cc: Tomy Wang <Tomy.Wang@rdc.com.tw>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>