message: comments out installation of python 3
diff: @@ -72,7 +72,8 @@ execute_mac ()
  node --version
  npm --version
  - brew install scripts/ot_python3.rb
  + # NOTE(ahmed): We might not need python 3 explicit installation any more
  + # brew install scripts/ot_python3.rb
  python3 --version
  python3 -c "import struct; print(struct.calcsize('P') * 8)"
  python --version
  