mtd: sa11x0: remove definitions and code left for documentation purposes

/*
 * This is here for documentation purposes only - until these people
 * submit their machine types.  It will be gone January 2005.
 */

It's now seven years after that date, so let's remove this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>