PCI/PM: Remove __pci_pme_wakeup() unused declarations

Commit b67ea76 ("PCI / ACPI / PM: Platform support for PCI PME
wake-up") declared but never implemented __pci_pme_wakeup().  Remove the
unused declaration.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Yue Haibing <[email protected]>
[bhelgaas: split per feature]
Signed-off-by: Bjorn Helgaas <[email protected]>

Author: Yue Haibing

drivers/pci/pci.h

@@ -124,7 +124,6 @@ void pcie_clear_device_status(struct pci_dev *dev);
 void pcie_clear_root_pme_status(struct pci_dev *dev);
 bool pci_check_pme_status(struct pci_dev *dev);
 void pci_pme_wakeup_bus(struct pci_bus *bus);
-int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
 void pci_pme_restore(struct pci_dev *dev);
 bool pci_dev_need_resume(struct pci_dev *dev);
 void pci_dev_adjust_pme(struct pci_dev *dev);