remove other eslint files

Author: archmoj

.gitignore

@@ -15,5 +15,3 @@ tags
 !.circleci
 !.gitignore
 !.npmignore
-!.eslintrc
-!.eslintignore

.npmignore

@@ -14,7 +14,5 @@ bower.json
 
 .ackrc
 .agignore
-.eslintignore
-.eslintrc
 
 npm-debug.log

CONTRIBUTING.md

@@ -391,7 +391,3 @@ Other methods used by some trace modules:
 
 Check if ok, with `npm run lint`
 
-- See [eslintrc](https://github.com/plotly/plotly.js/blob/master/.eslintrc) and
-  the eslint [list of rules](http://eslint.org/docs/rules/) for more details.
-- Rules listed in the eslintrc file with the ignore flag `0` are the recommended
-  rules for new code added.