usb: host: remove USB_ARCH_HAS_?HCI

USB_ARCH_HAS_EHCI, USB_ARCH_HAS_OHCI, and USB_ARCH_HAS_XHCI were made
obsolete in v3.11. They have not been used ever since. Setting them has
no effect. They can safely be removed.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/Kconfig

@@ -2,10 +2,6 @@
 # USB device configuration
 #
 
-# These are unused now, remove them once they are no longer selected
-config USB_ARCH_HAS_OHCI
-	bool
-
 config USB_OHCI_BIG_ENDIAN_DESC
 	bool
 
@@ -17,18 +13,12 @@ config USB_OHCI_LITTLE_ENDIAN
 	default n if STB03xxx || PPC_MPC52xx
 	default y
 
-config USB_ARCH_HAS_EHCI
-	bool
-
 config USB_EHCI_BIG_ENDIAN_MMIO
 	bool
 
 config USB_EHCI_BIG_ENDIAN_DESC
 	bool
 
-config USB_ARCH_HAS_XHCI
-	bool
-
 menuconfig USB_SUPPORT
 	bool "USB support"
 	depends on HAS_IOMEM