usb: renesas-xhci: Remove renesas_xhci_pci_exit()

Remove empty function renesas_xhci_pci_exit() that does not
actually do anything.

Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/20210718015111.389719-3-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-pci-renesas.c

@@ -620,9 +620,4 @@ exit:
 }
 EXPORT_SYMBOL_GPL(renesas_xhci_check_request_fw);
 
-void renesas_xhci_pci_exit(struct pci_dev *dev)
-{
-}
-EXPORT_SYMBOL_GPL(renesas_xhci_pci_exit);
-
 MODULE_LICENSE("GPL v2");

drivers/usb/host/xhci-pci.c

@@ -449,8 +449,6 @@ static void xhci_pci_remove(struct pci_dev *dev)
 	struct xhci_hcd *xhci;
 
 	xhci = hcd_to_xhci(pci_get_drvdata(dev));
-	if (xhci->quirks & XHCI_RENESAS_FW_QUIRK)
-		renesas_xhci_pci_exit(dev);
 
 	xhci->xhc_state |= XHCI_STATE_REMOVING;
 

drivers/usb/host/xhci-pci.h

@@ -7,7 +7,6 @@
 #if IS_ENABLED(CONFIG_USB_XHCI_PCI_RENESAS)
 int renesas_xhci_check_request_fw(struct pci_dev *dev,
 				  const struct pci_device_id *id);
-void renesas_xhci_pci_exit(struct pci_dev *dev);
 
 #else
 static int renesas_xhci_check_request_fw(struct pci_dev *dev,
@@ -16,8 +15,6 @@ static int renesas_xhci_check_request_fw(struct pci_dev *dev,
 	return 0;
 }
 
-static void renesas_xhci_pci_exit(struct pci_dev *dev) { };
-
 #endif
 
 struct xhci_driver_data {