Revert "vmgenid: emit uevent when VMGENID updates"

This reverts commit ad6bcda. I had
nak'd it, and Greg said on the thread that it links that he wasn't going
to take it either, especially since it's not his code or his tree, but
then, seemingly accidentally, it got pushed up some months later, in
what looks like a mistake, with no further discussion in the linked
thread. So revert it, since it's clearly not intended.

Fixes: ad6bcda ("vmgenid: emit uevent when VMGENID updates")
Cc: [email protected]
Acked-by: Greg Kroah-Hartman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jason A. Donenfeld <[email protected]>

Author: zx2c4

drivers/virt/vmgenid.c

@@ -68,15 +68,13 @@ static int vmgenid_add(struct acpi_device *device)
 static void vmgenid_notify(struct acpi_device *device, u32 event)
 {
 	struct vmgenid_state *state = acpi_driver_data(device);
-	char *envp[] = { "NEW_VMGENID=1", NULL };
 	u8 old_id[VMGENID_SIZE];
 
 	memcpy(old_id, state->this_id, sizeof(old_id));
 	memcpy(state->this_id, state->next_id, sizeof(state->this_id));
 	if (!memcmp(old_id, state->this_id, sizeof(old_id)))
 		return;
 	add_vmfork_randomness(state->this_id, sizeof(state->this_id));
-	kobject_uevent_env(&device->dev.kobj, KOBJ_CHANGE, envp);
 }
 
 static const struct acpi_device_id vmgenid_ids[] = {