sf: drop unused/duplicate command defines

In an effort to unify the spi flash drivers further, drop all the
unused and/or duplicate command defines.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c
index dacbc28..87a3ad0 100644
--- a/drivers/mtd/spi/macronix.c
+++ b/drivers/mtd/spi/macronix.c
@@ -36,18 +36,9 @@
 #include "spi_flash_internal.h"
 
 /* MX25xx-specific commands */
-#define CMD_MX25XX_WREN		0x06	/* Write Enable */
-#define CMD_MX25XX_WRDI		0x04	/* Write Disable */
-#define CMD_MX25XX_RDSR		0x05	/* Read Status Register */
-#define CMD_MX25XX_WRSR		0x01	/* Write Status Register */
-#define CMD_MX25XX_READ		0x03	/* Read Data Bytes */
-#define CMD_MX25XX_FAST_READ	0x0b	/* Read Data Bytes at Higher Speed */
-#define CMD_MX25XX_PP		0x02	/* Page Program */
 #define CMD_MX25XX_SE		0x20	/* Sector Erase */
 #define CMD_MX25XX_BE		0xD8	/* Block Erase */
 #define CMD_MX25XX_CE		0xc7	/* Chip Erase */
-#define CMD_MX25XX_DP		0xb9	/* Deep Power-down */
-#define CMD_MX25XX_RES		0xab	/* Release from DP, and Read Signature */
 
 struct macronix_spi_flash_params {
 	u16 idcode;
@@ -128,7 +119,7 @@
 		return ret;
 	}
 
-	cmd = CMD_MX25XX_WRSR;
+	cmd = CMD_WRITE_STATUS;
 	ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &sr, 1);
 	if (ret) {
 		debug("SF: fail to write status register\n");