nb/intel/haswell/pcie.c: remove disable NOP

The .disable function pointer is only referenced inside
set_vga_bridge_bits() and is used to unset VGA decoding on the
internal GFX device.

Change-Id: I0443a45522b2267e8e23b28e4e2033f25a7ccbf0
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51008
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/haswell/pcie.c b/src/northbridge/intel/haswell/pcie.c
index d9e77a7..a631cc8 100644
--- a/src/northbridge/intel/haswell/pcie.c
+++ b/src/northbridge/intel/haswell/pcie.c
@@ -7,12 +7,6 @@
 #include <device/pci_ids.h>
 #include <assert.h>
 
-static void pcie_disable(struct device *dev)
-{
-	printk(BIOS_INFO, "%s: Disabling device\n", dev_path(dev));
-	dev->enabled = 0;
-}
-
 #if CONFIG(HAVE_ACPI_TABLES)
 static const char *pcie_acpi_name(const struct device *dev)
 {
@@ -53,7 +47,6 @@
 	.enable_resources	= pci_bus_enable_resources,
 	.scan_bus		= pciexp_scan_bridge,
 	.reset_bus		= pci_bus_reset,
-	.disable		= pcie_disable,
 	.init			= pci_dev_init,
 	.ops_pci		= &pci_dev_ops_pci,
 #if CONFIG(HAVE_ACPI_TABLES)