arm, at91: taurus remove MACH_TYPE definitions in config file

remove MACH_TYPE definitions in config file, as they come from
the defconfig.

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/include/configs/taurus.h b/include/configs/taurus.h
index b61dc2d..2cf4558 100644
--- a/include/configs/taurus.h
+++ b/include/configs/taurus.h
@@ -21,9 +21,6 @@
  */
 #include <asm/hardware.h>
 
-#define MACH_TYPE_TAURUS		2067
-#define MACH_TYPE_AXM			2068
-
 #define CONFIG_SYS_GENERIC_BOARD
 
 #if defined(CONFIG_SPL_BUILD)