message: Don't wrap host IO in poplar graph functions.
  Summary:
  This inhibits poplar analysis from being able to decide whether an input can be prefetched
  resolves T31703
  Test Plan: CI tests
  Reviewers: #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, davidn
  Maniphest Tasks: T31703
diff: @@ -1632,9 +1632,6 @@ Status PipelineVisitor::FinishDeferedAllocationVisit(HloInstruction* inst) {
  absl::c_transform(inter_ipu_copy_sequences_,
  inter_ipu_copy_sequences_.begin(), to_function);
  absl::c_transform(fifo_sequences_, fifo_sequences_.begin(), to_function);
  - absl::c_transform(infeed_sequences_, infeed_sequences_.begin(), to_function);
  - absl::c_transform(outfeed_sequences_, outfeed_sequences_.begin(),
  - to_function);
  absl::c_transform(program_sequences_, program_sequences_.begin(),
  to_function);
  absl::c_transform(recomputation_sequences_, recomputation_sequences_.begin(),
  