message: Remove extra #define EIGEN_USE_THREADS.
  It breaks some builds with
  error: "EIGEN_USE_THREADS" redefined [-Werror]
diff: @@ -16,8 +16,6 @@ limitations under the License.
  #ifndef TENSORFLOW_COMMON_RUNTIME_EIGEN_THREAD_POOL_H_
  #define TENSORFLOW_COMMON_RUNTIME_EIGEN_THREAD_POOL_H_
  -#define EIGEN_USE_THREADS
  -
  #include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"
  #include "tensorflow/core/lib/core/threadpool.h"
  