PCI: kirin: Remove unused assignments

hi3660_pcie_phy_init() assigned "pdev", but never used the value. Drop it.

Found by Krzysztof using cppcheck:

$ cppcheck --enable=all --force
unreadVariable drivers/pci/controller/dwc/pcie-kirin.c:336 Variable 'pdev' is assigned a value that is never used.

Reported-by: Krzysztof Wilczyński <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bjorn Helgaas <[e-mail]>

drivers/pci/controller/dwc/pcie-kirin.c

···
 	pcie->phy_priv = phy;
 	phy->dev = dev;
 
-	/* registers */
-	pdev = container_of(dev, struct platform_device, dev);
-
 	ret = hi3660_pcie_phy_get_clk(phy);
 	if (ret)
 		return ret;