Revert "Handle empty devices in OCI spec"

This reverts commit a9c4a82.

src/generate/generator.rs

@@ -50,25 +50,15 @@ impl Generator {
  self.init_config_linux_resources();
  if let Some(linux) = self.config.as_mut().unwrap().linux_mut() {
  if let Some(resource) = linux.resources_mut() {
-
- let add_device = |allow, dev_type, major, minor, access| {
+ if let Some(devices) = resource.devices_mut() {
  let mut device = LinuxDeviceCgroup::default();
  device.set_allow(allow);
  device.set_typ(Some(dev_type));
  device.set_major(major);
  device.set_minor(minor);
  device.set_access(access);
- device
- };
-
- let device = add_device(allow, dev_type, major, minor, access);
 
- if let Some(devices) = resource.devices_mut() {
- devices.push(device);
- } else {
- let mut devices = Vec::new();
  devices.push(device);
- resource.set_devices(Some(devices));
  }
  }
  }