message: Remove prerequisites from installation instruction
  `pip` and `conda` handle installing the prerequisites.
diff: @@ -51,18 +51,9 @@ Stay up to date with the latest ONNX news. [[Facebook](https://www.facebook.com/
  # Installation
  -## Prerequisites
  -
  -```
  -numpy >= 1.16.6
  -protobuf >= 3.12.2
  -typing-extensions >= 3.6.2.1
  -```
  -
  ## Official Python packages
  ONNX released packages are published in PyPi.
  ```
  -pip install numpy protobuf==3.16.0
  pip install onnx
  ```
  @@ -72,7 +63,6 @@ pip install onnx
  ## Conda packages
  A binary build of ONNX is available from [Conda](https://conda.io), in [conda-forge](https://conda-forge.org/):
  ```
  -conda install -c conda-forge numpy protobuf==3.16.0 libprotobuf=3.16.0
  conda install -c conda-forge onnx
  ```
  