message: Don't pass args to pipeline op
  Summary:
  Fixes T34181
  TF2.1 Only
  Test Plan: CI
  Reviewers: davidn, jackh, #tensorflow, simonl, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved
  Maniphest Tasks: T34181
diff: @@ -404,8 +404,7 @@ class PipelineSequential(ipu_model._IpuModelBase): # pylint: disable=protected-
  offload_gradient_accumulation_buffers,
  replicated_weight_sharding=self.replicated_weight_sharding,
  offload_weights=self.offload_weights,
  - name=self.name,
  - **self.args)
  + name=self.name)
  return pipeline.outputs
  @@ -1064,8 +1063,7 @@ class PipelineModel(ipu_model.Model):
  offload_gradient_accumulation_buffers,
  replicated_weight_sharding=self.replicated_weight_sharding,
  offload_weights=self.offload_weights,
  - name=self.name,
  - **self.args)
  + name=self.name)
  return pipeline.outputs
  