message: [XLA] Remove redundant type info on constants in HLO graph dump.
  Instead of printing constants as e.g. "f32[] 1 (f32[])", print them simply as
  "f32[] 1".
diff: @@ -829,8 +829,7 @@ string HloDotDumper::GetInstructionNodeInlinedOperands(
  // collected from profiling tools. Those constants may not have a valid
  // literal.
  if (elem_count.has_value() && *elem_count <= 8 && constant->HasLiteral()) {
  - return StrFormat("%s (%s)", constant->literal().ToString(),
  - ShapeUtil::HumanString(constant->shape()));
  + return constant->literal().ToString();
  }
  // Otherwise, print e.g. "%constant.42 (s32[100])".
  