refactor: removing outdated eslint config file (#1393)

Author: mfranzke

.eslintrc.json

@@ -48,7 +48,7 @@ This ensures that any changes you've made will still result in a clean and funct
 
 ## Coding style
 
-Formatting is automated via [Prettier](https://prettier.io/), setup to run on precommit. We suggest [editor integration](https://prettier.io/docs/en/editors.html) for this and for eslint. Prettier is further configured within `.prettierrc`. Eslint validates syntax and usage that Prettier doesn't handle. Configuration for both is found within the `.eslintrc.json` file.
+Formatting is automated via [Prettier](https://prettier.io/), setup to run on precommit. We suggest [editor integration](https://prettier.io/docs/en/editors.html) for this and for eslint. Prettier is further configured within `.prettierrc`. Eslint validates syntax and usage that Prettier doesn't handle. Configuration for both is found within the `.eslintrc.js` file.
 
 The `.editorconfig` controls spaces / tabs within supported editors. Check out their [site](http://editorconfig.org/).