pci: Remove duplicate PCI_REGION_IO / "io" line

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/cmd/pci.c b/cmd/pci.c
index 6258699..58a7475 100644
--- a/cmd/pci.c
+++ b/cmd/pci.c
@@ -452,7 +452,6 @@
 	{ PCI_REGION_PREFETCH, "prefetch" },
 	{ PCI_REGION_SYS_MEMORY, "sysmem" },
 	{ PCI_REGION_RO, "readonly" },
-	{ PCI_REGION_IO, "io" },
 };
 
 static void pci_show_regions(struct udevice *bus)