message: Remove an old function signature that isn't used and doesn't have an implementation.
diff: @@ -221,19 +221,6 @@ class IrEmitterUnnested : public IrEmitter {
  const HloInstruction& hlo,
  const llvm_ir::ElementGenerator& body_emitter) override;
  - // Same as `EmitTargetElementLoop`, but in given `thunk` rather than
  - // `LastThunk()`. The kernel implementation will be unrolled if
  - // `unroll_factor` is greater than one. If `few_waves` is true,
  - // each threads will loop over a block of unroll_factor
  - // elements. Otherwise each threads will handle only unroll_factor
  - // elements. If `row_optimized` is true, then the block size will
  - // equal to `hlo.shape().dimensions().back()/unroll_factor`. This
  - // help vectorize when doing broadcasting on the last dimensions.
  - Status EmitTargetElementLoopInThunk(
  - const HloInstruction& hlo, const llvm_ir::ElementGenerator& body_emitter,
  - KernelThunk* thunk, int unroll_factor, bool few_waves = false,
  - bool row_optimized = false);
  -
  Status Postprocess(HloInstruction* hlo) override;
  private:
  