[webpack] remove util shortcut from webpack

[ridz1208]

Describe the bug
Our webpack file contains the following line

    util: path.resolve(__dirname, './htdocs/js/util'),

I would like to make a PR to 24.1 to remove it for the following reasons

1. It seems to be unused in the code
2. The util nomenclature is too generic and it seems to cause collision with other existing utilities. one example of that is when you try to incorporate the Open Science Identity bundle and run npm run compile, the error below shows up due to the existance of the shortcut util pointing to our own util class.

   Child 
       ERROR in ./project/modules/new_profile/node_modules/readable-stream/lib/_stream_readable.js
       Module not found: Error: Can't resolve 'util' in '/var/www/loris/project/modules/new_profile/node_modules/readable-stream/lib'
   

[ridz1208]

@driusan any oppositions ?

[driusan]

Just saw this.. no, no opposition from me.