message: Remove unnecessary EIGEN_HAS_TYPE_TRAITS=0.
  This was an old hack to work around compiler issues in detecting
  whether `type_traits` was available. TF now requires c++14 which
  is guaranteed to have `type_traits`.
diff: @@ -44,7 +44,6 @@ cc_library(
  # code. We use it, but we do not rely on it, as evidenced above.
  "EIGEN_MPL2_ONLY",
  "EIGEN_MAX_ALIGN_BYTES=64",
  - "EIGEN_HAS_TYPE_TRAITS=0",
  ],
  includes = ["."],
  visibility = ["//visibility:public"],
  