Remove `ESLint` from `devDependencies`
Remove `ESLint` from `devDependencies`

`ESLint` is already included as a dependency.

Ref: https://cloud.githubusercontent.com/assets/1223565/24654302/ba8acf3e-1941-11e7-864f-c553de1f2eed.png

sonarwhal/sonar,alrra/sonar,sonarwhal/sonar,alrra/sonar,sonarwhal/sonar,alrra/sonar