message: Update README.md remove the requirements of plan generation
diff: @@ -18,13 +18,11 @@ Please find more introductions in our [**HugeCTR User Guide**](docs/hugectr_user
  * NCCL >= 2.0
  * Clang-Format 3.8
  * GCC >= 7.4.0
  -* Compiler should have OpenMP support
  +* ortools
  ### Optional, if require multi-nodes training ###
  * OpenMPI >= 4.0
  * UCX library >= 1.6
  * HWLOC library >= 2.1.0
  -### Plan generation for LocalizedSlotEmbedding (pip install) ###
  -* ortools
  * mpi4py
  ## Build ##
  