fn remove_hotplug_device(
linux: &mut RunnableLinuxVm,
sys_allocator: &mut SystemAllocator,
iommu_host_tube: Option<&Tube>,
device: &HotPlugDeviceInfo,
) -> Result<()>fn remove_hotplug_device(
linux: &mut RunnableLinuxVm,
sys_allocator: &mut SystemAllocator,
iommu_host_tube: Option<&Tube>,
device: &HotPlugDeviceInfo,
) -> Result<()>