remove ioremap_nocache and devm_ioremap_nocache

ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

drivers/net/wireless/intel/ipw2x00/ipw2100.c

@@ -6167,7 +6167,7 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
 	ioaddr = pci_iomap(pci_dev, 0, 0);
 	if (!ioaddr) {
 		printk(KERN_WARNING DRV_NAME
-		       "Error calling ioremap_nocache.\n");
+		       "Error calling ioremap.\n");
 		err = -EIO;
 		goto fail;
 	}