lpc32xx: i2c: remove unused define

The LPC32XX_I2C_STAT_DRMI is not used anywhere so remove it.

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
diff --git a/drivers/i2c/lpc32xx_i2c.c b/drivers/i2c/lpc32xx_i2c.c
index f89f795..0ae1166 100644
--- a/drivers/i2c/lpc32xx_i2c.c
+++ b/drivers/i2c/lpc32xx_i2c.c
@@ -38,7 +38,6 @@
 /* Status register values */
 #define LPC32XX_I2C_STAT_TFF		0x00000400
 #define LPC32XX_I2C_STAT_RFE		0x00000200
-#define LPC32XX_I2C_STAT_DRMI		0x00000008
 #define LPC32XX_I2C_STAT_NAI		0x00000004
 #define LPC32XX_I2C_STAT_TDI		0x00000001