Remove code of conduct file

It will be re-added automatically when the next PDF.js release happens
because it's now checked in in the PDF.js repository. The removal here
is to avoid having files in this repository that are not also in the
PDF.js repository.

CODE_OF_CONDUCT.md

@@ -1,15 +0,0 @@
-# Community Participation Guidelines
-
-This repository is governed by Mozilla's code of conduct and etiquette guidelines. 
-For more details, please read the
-[Mozilla Community Participation Guidelines](https://www.mozilla.org/about/governance/policies/participation/). 
-
-## How to Report
-For more information on how to report violations of the Community Participation Guidelines, please read our '[How to Report](https://www.mozilla.org/about/governance/policies/participation/reporting/)' page.
-
-<!--
-## Project Specific Etiquette
-
-In some cases, there will be additional project etiquette i.e.: (https://bugzilla.mozilla.org/page.cgi?id=etiquette.html).
-Please update for your project.
--->