omap4: sdp4430: remove CONFIG_4430SDP

This macro is defined, but not referenced by anyone.

I did not touch config_whitelist.txt - the CONFIG will be dropped
by the next re-sync.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/include/configs/omap4_sdp4430.h b/include/configs/omap4_sdp4430.h
index c89bd13..c7f7131 100644
--- a/include/configs/omap4_sdp4430.h
+++ b/include/configs/omap4_sdp4430.h
@@ -16,7 +16,6 @@
 /*
  * High Level Configuration Options
  */
-#define CONFIG_4430SDP		1	/* working with SDP */
 #define CONFIG_MACH_TYPE	MACH_TYPE_OMAP_4430SDP
 
 #include <configs/ti_omap4_common.h>