arm: rmobile: kzm9g: remove unrelated config

Remove CONFIG_ARM_CORTEXA9.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

include/configs/kzm9g.h

@@ -23,7 +23,6 @@
 
 #undef DEBUG
 
-#define CONFIG_ARM_CORTEXA9
 #define CONFIG_RMOBILE
 #define CONFIG_SH73A0
 #define CONFIG_KZM_A9_GT