ARM: exynos5420: Leave VBUS GPIO configuration up to common code

Since commit 4a271cb1b4 (exynos: usb: Switch USB VBUS GPIOs to be
device tree configured) it's not needed for the board specific files to
turn on the VBUS GPIO by hand as that gets done based on device tree. So
drop the redundant code from the SMDK5420 board file.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

board/samsung/smdk5420/smdk5420.c

@@ -22,24 +22,8 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#ifdef CONFIG_USB_EHCI_EXYNOS
-static int board_usb_vbus_init(void)
-{
-	/* Enable VBUS power switch */
-	gpio_direction_output(EXYNOS5420_GPIO_X26, 1);
-
-	/* VBUS turn ON time */
-	mdelay(3);
-
-	return 0;
-}
-#endif
-
 int exynos_init(void)
 {
-#ifdef CONFIG_USB_EHCI_EXYNOS
-	board_usb_vbus_init();
-#endif
 	return 0;
 }