sh7734: remove CONFIG_553MHZ_MODE

This macro only appears in commented-out lines.  It is not referenced
by anyone.

I did not touch config_whitelist.txt - the CONFIG will be dropped
by the next re-sync.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>

include/configs/ap_sh4a_4a.h

@@ -12,7 +12,6 @@
 #define CONFIG_CPU_SH7734	1
 #define CONFIG_AP_SH4A_4A	1
 #define CONFIG_400MHZ_MODE	1
-/* #define CONFIG_533MHZ_MODE	1 */
 
 #define CONFIG_SYS_TEXT_BASE 0x8BFC0000
 

include/configs/r0p7734.h

@@ -12,7 +12,6 @@
 #define CONFIG_CPU_SH7734	1
 #define CONFIG_R0P7734		1
 #define CONFIG_400MHZ_MODE	1
-/* #define CONFIG_533MHZ_MODE	1 */
 
 #define CONFIG_SYS_TEXT_BASE 0x8FFC0000