ppc4xx: alpr: Remove some not needed commands to make image fit again

The latest changes increased the size of the alpr image a bit more.
Now it doesn't fit into the 256k reserved for it. This patch now removes
the commands "loads" and "loadb" which are not needed in the production
systems.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Pieter Voorthuijsen <pieter.voorthuijsen@prodrive.nl>