message: Fix build for ipu_multi_worker_strategy
  Reviewers: #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, georgep
  Maniphest Tasks: T22778
diff: @@ -436,7 +436,3 @@ class IPUMultiWorkerExtended(
  return collective_ops.broadcast_recv(initial_value.shape,
  initial_value.dtype, group_size,
  group_key, collective_instance_key)
  -
  - def non_slot_devices(self, var_list):
  - del var_list
  - return self._ipu_device
  