remove FREETZ_KERNEL_REF, avoids
 * Config.ur8-16mb.7270_04.86 -> Config.ur8-8mb.7270_04.86
 * Config.vr9-4mb.7360_05.20 -> Config.vr9-16mb.7360_05.20
 * Config.vr9-32mb.7360_05.20 -> Config.vr9-4mb.7360_05.20
 

git-svn-id: file:///var/svn/freetz/trunk@9979 149334a1-2f27-0410-a3b9-fc62619ac1e6