PCI: pciehp: Remove unused interrupt events

The list of interrupt events (INT_BUTTON_IGNORE, INT_PRESENCE_ON, etc.) was
copied from other hotplug drivers, but pciehp doesn't use them all.

Remove the interrupt events that aren't used by pciehp.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

drivers/pci/hotplug/pciehp.h

@@ -101,18 +101,14 @@ struct controller {
 	unsigned int power_fault_detected;
 };
 
-#define INT_BUTTON_IGNORE		0
 #define INT_PRESENCE_ON			1
 #define INT_PRESENCE_OFF		2
 #define INT_SWITCH_CLOSE		3
 #define INT_SWITCH_OPEN			4
 #define INT_POWER_FAULT			5
-#define INT_POWER_FAULT_CLEAR		6
-#define INT_BUTTON_PRESS		7
-#define INT_BUTTON_RELEASE		8
-#define INT_BUTTON_CANCEL		9
-#define INT_LINK_UP			10
-#define INT_LINK_DOWN			11
+#define INT_BUTTON_PRESS		6
+#define INT_LINK_UP			7
+#define INT_LINK_DOWN			8
 
 #define STATIC_STATE			0
 #define BLINKINGON_STATE		1