update root package.json

Author: broccolini

package.json

@@ -1,16 +1,9 @@
 {
-  "version": "6.0.0",
   "name": "primer-css",
   "description": "Primer is the CSS toolkit that powers GitHub's front-end design. It's purposefully limited to common components to provide our developers with the most flexibility, and to keep GitHub uniquely *GitHubby*. It's built with SCSS, so it's easy to include all or part of it within your own project.",
   "homepage": "http://primercss.io/",
   "author": "GitHub, Inc.",
   "license": "MIT",
-  "style": "build/build.css",
-  "files": [
-    "index.scss",
-    "lib",
-    "build"
-  ],
   "repository": {
     "type": "git",
     "url": "https://github.com/primer/primer-css.git"
@@ -26,11 +19,6 @@
     "prepublish": "npm run build",
     "test": "npm run build"
   },
-  "dependencies": {
-    "primer-core": "^3.0.0",
-    "primer-marketing": "^3.0.0",
-    "primer-product": "^3.0.0"
-  },
   "devDependencies": {
     "lerna": "^2.0.0-rc.2",
     "primer-module-build": "*"