tulip: Fix dead 21041 ethernet after ifconfig down

The de2104x did a pci_disable_device() in it's close function, but
the open function never does a pci_enable_device() and assumes that
the device is already enabled. Considering that downing the interface
is just a temporary thing the pci_disable_device() isn't a pretty good
idea and removing it from the close function just fixes the bug.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/tulip/de2104x.c

@@ -1418,7 +1418,6 @@ static int de_close (struct net_device *dev)
 
 	de_free_rings(de);
 	de_adapter_sleep(de);
-	pci_disable_device(de->pdev);
 	return 0;
 }