Remove eslint-plugin-vue-libs dependency

Remove redundancy dependency eslint-plugin-vue-libs.

We don't use this library anywhere. This library contains a preset for ESLint for the development of Vue itself, not intended for Vue app development.

-1 dependency and less warnings on running yarn install:

warning "eslint-plugin-vue-libs > eslint-plugin-vue@5.2.3" has incorrect peer dependency "eslint@^5.0.0".
warning "eslint-plugin-vue-libs > eslint-plugin-vue > vue-eslint-parser@5.0.0" has incorrect peer dependency "eslint@^5.0.0".