Blackfin: bf533-stamp: drop old spi flash driver

Now that the common SPI flash code supports all the flashes, we can stop
using the old driver.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

board/bf533-stamp/Makefile

@@ -30,7 +30,6 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(BOARD).a
 
 COBJS-y	:= $(BOARD).o
-COBJS-$(CONFIG_CMD_EEPROM) += spi_flash.o
 COBJS-$(CONFIG_VIDEO) += video.o
 
 SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)

board/bf533-stamp/spi_flash.c

-/* Share the spi flash code */
-#include "../bf537-stamp/spi_flash.c"