PCI: cpcihp: Remove unused struct cpci_hp_controller_ops.hardware_test

The 'hardware_test' field in struct cpci_hp_controller_ops is unused;
remove it to reduce resource consumption.

Link: https://lore.kernel.org/r/20241014131917.324667-1-trintaeoitogc@gmail.com
Signed-off-by: Guilherme Giacomo Simoes <trintaeoitogc@gmail.com>
[bhelgas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Author: GuilhermeGiacomoSimoes

drivers/pci/hotplug/cpci_hotplug.h

@@ -44,7 +44,6 @@ struct cpci_hp_controller_ops {
 	int (*enable_irq)(void);
 	int (*disable_irq)(void);
 	int (*check_irq)(void *dev_id);
-	int (*hardware_test)(struct slot *slot, u32 value);
 	u8  (*get_power)(struct slot *slot);
 	int (*set_power)(struct slot *slot, int value);
 };