edac: edac_core.h: remove prototype for edac_pci_reset_delay_period()

This function doesn't exist. So, remove its prototype.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index 58d66da..1723f36 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -493,9 +493,6 @@
 
 extern void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci);
 
-extern void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
-				unsigned long value);
-
 extern int edac_pci_alloc_index(void);
 extern int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx);
 extern struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev);