message: Remove previous fix
  Summary:
  Seems like there already were some changes for  T17552 in v2
  Ref T17552
  Test Plan: It compiles.
  Reviewers: #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, hakons
  Maniphest Tasks: T17552
diff: @@ -33,11 +33,6 @@ Status GetMeanAndVarianceDimension(
  data_format_str.c_str());
  }
  - if (c->Rank(in_shape) == -1) {
  - num_groups_time_batches = -1;
  - return Status::OK();
  - }
  -
  const int batch_index =
  GetTensorBatchDimIndex(c->Rank(in_shape), data_format);
  auto batch_size = c->Dim(in_shape, batch_index);
  