PCI: endpoint: pci-epf-test: Remove superfluous code

PCI: endpoint: pci-epf-test: Remove superfluous code

The only reason why we call pci_epf_configure_bar() is to set
PCI_BASE_ADDRESS_MEM_TYPE_64 in case the hardware requires it.

However, this flag is now automatically set when allocating a BAR that
can only be a 64-bit BAR, so we can drop pci_epf_configure_bar()
completely.

Link: https://lore.kernel.org/linux-pci/20240320113157.322695-4-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>