Remove build section from js guidelines

This is "completely out of date", according to @diasdavid in #225 (comment). I remove it here. What should go in its place?

Author: RichardLitt

js-project-guidelines.md

@@ -24,7 +24,6 @@ Also, remember:
 - [Guidelines](#guidelines)
   - [Linting & Code Style](#linting--code-style)
   - [Testing](#testing)
-  - [Building](#building)
   - [Releasing](#releasing)
 - [Commits](#commits)
   - [Commit Message Format](#commit-message-format)
@@ -101,19 +100,6 @@ However, we've added an extra linting rule: Enforce the use of [strict mode](htt
 
 Since `js-ipfs` is meant to be both a Node.js and Browser app, we strongly recommend having tests that run in both platforms, always. For most cases, we use [mocha](http://mochajs.org) to run write the tests and [karma](http://karma-runner.github.io) to automate the test execution in the browser. This solution has been extremely convenient.
 
-### Building
-
-In most IPFS JavaScript projects, we use [webpack](http://webpack.github.io/) for bundling the JavaScript. It adds a greater overhead when it comes to configuration, but this configuration can be reused since most projects share the same needs.
-
-Where ES2015 is used, we managed to ensure that the code continues to run in every platform by transpiling it, if necessary, with [babel](http://babeljs.io/).
-
-To make sure users can use the modules without having to transpile and shim the modules themselves, we've made the following available in most modules:
-
-- __Raw ES2015 version__, ready to be consumed by platforms that understand Node.js based require and most of ES2015.
-- __Raw ES5 version__, ready to be consumed by platforms that understand Node.js based require and ES5.
-- __Concatenated ES5 version__, ready to be consumed by browsers through a script tag, where size does not matter.
-- __Concatenated and minified ES5 version__, ready to be consumed by browsers through a script tag, where size matters.
-
 ### Releasing
 
 Each time a new release happens, these are the steps we follow to make sure nothing gets left out: