PCI: artpec6: Remove unused platform data

The artpec6 driver never uses the platform drvdata pointer, so don't
bother setting it.  No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>

drivers/pci/host/pcie-artpec6.c

@@ -262,7 +262,6 @@ static int artpec6_pcie_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	platform_set_drvdata(pdev, artpec6_pcie);
 	return 0;
 }