[zanata/zanata-platform] 0917e8: chore: remove unused storybook webpack.config

[GitHub]

  Branch: refs/heads/efloden/upgrade-webpack-4.5.0
  Home:   https://github.com/zanata/zanata-platform
  Commit: 0917e844a35b0c76e0b946b0fe44ca21e5502c15
      https://github.com/zanata/zanata-platform/commit/0917e844a35b0c76e0b946b0fe44ca21e5502c15
  Author: efloden <efloden at redhat.com>
  Date:   2018-04-24 (Tue, 24 Apr 2018)

  Changed paths:
    R server/zanata-frontend/src/webpack.config.storybook.js

  Log Message:
  -----------
  chore: remove unused storybook webpack.config