PCI: endpoint: Remove unused pci_epf_match_device()

Remove unused pci_epf_match_device() function added in pci-epf-core.c

Link: https://lore.kernel.org/r/20210201195809.7342-6-kishon@ti.com


Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>