Remove redundant DefinePlugin instantiation
Remove redundant DefinePlugin instantiation

  - this is handled inplicitly by invoking webpack with -p, which we're now doing

stride-nyc/remote_retro,tnewell5/remote_retro,tnewell5/remote_retro,stride-nyc/remote_retro,samdec11/remote_retro,stride-nyc/remote_retro