usb: phy: Remove unused config

Since the old common Samsung USB PHY code has been removed by commit ea2fdf84
("usb: phy: samsung: remove old common USB PHY code"), thus remove the unused
config.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/phy/Kconfig

@@ -74,13 +74,6 @@ config AM335X_PHY_USB
 	  This driver provides PHY support for that phy which part for the
 	  AM335x SoC.
 
-config SAMSUNG_USBPHY
-	tristate
-	help
-	  Enable this to support Samsung USB phy helper driver for Samsung SoCs.
-	  This driver provides common interface to interact, for Samsung USB 2.0 PHY
-	  driver and later for Samsung USB 3.0 PHY driver.
-
 config TWL6030_USB
 	tristate "TWL6030 USB Transceiver Driver"
 	depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS

drivers/usb/phy/Makefile

@@ -14,7 +14,6 @@ obj-$(CONFIG_TAHVO_USB)			+= phy-tahvo.o
 obj-$(CONFIG_AM335X_CONTROL_USB)	+= phy-am335x-control.o
 obj-$(CONFIG_AM335X_PHY_USB)		+= phy-am335x.o
 obj-$(CONFIG_OMAP_OTG)			+= phy-omap-otg.o
-obj-$(CONFIG_SAMSUNG_USBPHY)		+= phy-samsung-usb.o
 obj-$(CONFIG_TWL6030_USB)		+= phy-twl6030-usb.o
 obj-$(CONFIG_USB_EHCI_TEGRA)		+= phy-tegra-usb.o
 obj-$(CONFIG_USB_GPIO_VBUS)		+= phy-gpio-vbus-usb.o