drm/amdgpu: remove unnecessary save/restore of pdev->d3_delay

Remove unnecessary save/restore of pdev->d3_delay.

The only assignments to pdev->d3_delay are in radeon_switcheroo_set_state()
and some quirks, none of which should be relevant in the
amdgpu_switcheroo_set_state() path.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andreas Boll <andreas.boll.dev@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -1152,16 +1152,12 @@ static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switchero
 		return;
 
 	if (state == VGA_SWITCHEROO_ON) {
-		unsigned d3_delay = dev->pdev->d3_delay;
-
 		pr_info("amdgpu: switched on\n");
 		/* don't suspend or resume card normally */
 		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 
 		amdgpu_device_resume(dev, true, true);
 
-		dev->pdev->d3_delay = d3_delay;
-
 		dev->switch_power_state = DRM_SWITCH_POWER_ON;
 		drm_kms_helper_poll_enable(dev);
 	} else {