cmd: mvebu/bubt: Drop unused SPI_FLASH_PROTECTION

SPI_FLASH_PROTECTION config item is never used in anywhere
in the U-Boot tree.

Drop it.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/cmd/mvebu/bubt.c b/cmd/mvebu/bubt.c
index a27b0df..b3b5844 100644
--- a/cmd/mvebu/bubt.c
+++ b/cmd/mvebu/bubt.c
@@ -299,9 +299,6 @@
 		return -ENOMEDIUM;
 	}
 
-#ifdef CONFIG_SPI_FLASH_PROTECTION
-	spi_flash_protect(flash, 0);
-#endif
 	erase_bytes = image_size +
 		(flash->erase_size - image_size % flash->erase_size);
 	printf("Erasing %d bytes (%d blocks) at offset 0 ...",
@@ -320,10 +317,6 @@
 	else
 		printf("Done!\n");
 
-#ifdef CONFIG_SPI_FLASH_PROTECTION
-	spi_flash_protect(flash, 1);
-#endif
-
 	return ret;
 }