kernel-parameters: remove outdated 'noresidual' parameter

The PPC specific kernel parameter 'noresidual' was removed in v2.6.27,
though commit 917f0af9

 ("powerpc: Remove
arch/ppc and include/asm-ppc").

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>