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/551d0cdaabcf69fcd09a565475c428e09c61e1a3.1728762751.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Author: tititiou36

drivers/pci/hotplug/cpqphp_sysfs.c

@@ -123,7 +123,6 @@ static int spew_debug_info(struct controller *ctrl, char *data, int size)
 struct ctrl_dbg {
 	int size;
 	char *data;
-	struct controller *ctrl;
 };
 
 #define MAX_OUTPUT	(4*PAGE_SIZE)