PCI/VPD: Remove pci_vpd_release() unused declarations

Commit fd00faa3 ("PCI/VPD: Embed struct pci_vpd in struct pci_dev")
removed pci_vpd_release() but left the declaration.  Remove the unused
declaration.

Link: https://lore.kernel.org/r/20240824100331.586036-1-yuehaibing@huawei.comSigned-off-by: Yue Haibing <yuehaibing@huawei.com>
[bhelgaas: split per feature]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/pci.h

@@ -168,7 +168,6 @@ static inline bool pcie_downstream_port(const struct pci_dev *dev)
 }
 
 void pci_vpd_init(struct pci_dev *dev);
-void pci_vpd_release(struct pci_dev *dev);
 extern const struct attribute_group pci_dev_vpd_attr_group;
 
 /* PCI Virtual Channel */