blackfin, powerpc: remove redundant definitions of ARRAY_SIZE

Since ARRAY_SIZE macro is defined in include/common.h,
re-defining it in arch-specific files is redundant.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: NStefan Roese <sr@denx.de>
Acked-by: NSonic Zhang <sonic.zhang@analog.com>

arch/blackfin/include/asm/config-pre.h

@@ -9,9 +9,6 @@
 #ifndef __ASM_BLACKFIN_CONFIG_PRE_H__
 #define __ASM_BLACKFIN_CONFIG_PRE_H__
 
-/* Misc helper functions */
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
 /* Bootmode defines -- your config needs to select this via CONFIG_BFIN_BOOT_MODE.
  * Depending on your cpu, some of these may not be valid, check your HRM.
  * The actual values here are meaningless as long as they're unique.

arch/powerpc/cpu/ppc4xx/speed.c

@@ -19,8 +19,6 @@ DECLARE_GLOBAL_DATA_PTR;
 #define DEBUGF(fmt,args...)
 #endif
 
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
 #if defined(CONFIG_405GP)
 
 void get_sys_info (PPC4xx_SYS_INFO * sysInfo)