We have removed the assumption that dw_pcie_ops always exists in the dwc
core driver, so we can remove the useless dw_pcie_ops now.

Link: https://lore.kernel.org/r/20210128144324.2fa8577c@xhacker.debianSigned-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jonathan Chocron <jonnyc@amazon.com>