mx6ul_14x14_evk: Remove unused define

Remove unused define constant.

Signed-off-by: Diego Dorta <diego.dorta@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c

@@ -60,9 +60,6 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define ENET_CLK_PAD_CTRL  (PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST)
 
-#define ENET_RX_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |          \
-	PAD_CTL_SPEED_HIGH   | PAD_CTL_SRE_FAST)
-
 #define IOX_SDI IMX_GPIO_NR(5, 10)
 #define IOX_STCP IMX_GPIO_NR(5, 7)
 #define IOX_SHCP IMX_GPIO_NR(5, 11)