powerpc/powernv: Remove PCI_RESET_DELAY_US

The macro defined in arch/powerpc/platforms/powernv/pci.c isn't
used by anyone. Just remove it.
Signed-off-by: NGavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: NAndrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/pci.c

@@ -36,9 +36,6 @@
 #include "powernv.h"
 #include "pci.h"
 
-/* Delay in usec */
-#define PCI_RESET_DELAY_US	3000000
-
 #ifdef CONFIG_PCI_MSI
 int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 {