ARM: Remove HSC|DDC ETH PHY reset code after switching to DM/DTS

After commit efd0b791069a ("eth: dm: fec: Add gpio phy reset binding")
the in-board file definition of ETH PHY reset can be removed.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
diff --git a/board/k+p/kp_imx53/kp_imx53.c b/board/k+p/kp_imx53/kp_imx53.c
index becb6a6..ab17904 100644
--- a/board/k+p/kp_imx53/kp_imx53.c
+++ b/board/k+p/kp_imx53/kp_imx53.c
@@ -20,7 +20,6 @@
 #include "kp_id_rev.h"
 
 #define VBUS_PWR_EN IMX_GPIO_NR(7, 8)
-#define PHY_nRST IMX_GPIO_NR(7, 6)
 #define BOOSTER_OFF IMX_GPIO_NR(2, 23)
 #define LCD_BACKLIGHT IMX_GPIO_NR(1, 1)
 #define KEY1 IMX_GPIO_NR(2, 26)
@@ -168,17 +167,6 @@
 	return 0;
 }
 
-void eth_phy_reset(void)
-{
-	gpio_request(PHY_nRST, "PHY_nRST");
-	gpio_direction_output(PHY_nRST, 1);
-	udelay(50);
-	gpio_set_value(PHY_nRST, 0);
-	udelay(400);
-	gpio_set_value(PHY_nRST, 1);
-	udelay(50);
-}
-
 void board_disable_display(void)
 {
 	gpio_request(LCD_BACKLIGHT, "LCD_BACKLIGHT");
@@ -210,8 +198,6 @@
 	if (ret)
 		printf("Error %d reading EEPROM content!\n", ret);
 
-	eth_phy_reset();
-
 	show_eeprom();
 	read_board_id();