ARM: shmobile: defconfig: Drop useless CONFIG_USB_RCAR_PHY=y

The Renesas R-Car (Gen1) USB PHY driver (which is being removed) does
not support DT, and is thus useless in a Renesas ARM multi-platform
kernel.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/arm/configs/shmobile_defconfig b/arch/arm/configs/shmobile_defconfig
index e51f7a7..91233ed 100644
--- a/arch/arm/configs/shmobile_defconfig
+++ b/arch/arm/configs/shmobile_defconfig
@@ -162,7 +162,6 @@
 CONFIG_USB_OHCI_HCD=y
 CONFIG_USB_R8A66597_HCD=y
 CONFIG_USB_RENESAS_USBHS=y
-CONFIG_USB_RCAR_PHY=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_RENESAS_USBHS_UDC=y
 CONFIG_USB_ETH=y