PCI: cpqphp: Remove unused struct ctrl_dbg.ctrl

'ctrl' is unused; remove it to save a few bytes when the structure is
allocated.

Link: https://lore.kernel.org/r/551d0cdaab[e-mail]
Signed-off-by: Christophe JAILLET <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>

drivers/pci/hotplug/cpqphp_sysfs.c

···
 struct ctrl_dbg {
 	int size;
 	char *data;
-	struct controller *ctrl;
 };
 
 #define MAX_OUTPUT	(4*PAGE_SIZE)