Remove unused task: e2e

Author: piecioshka

package.json

@@ -9,8 +9,7 @@
     "postbuild": "rm projects/ngx-nullish/README.md",
     "test": "ng test --no-watch --no-progress --browsers ChromeHeadless",
     "test:watch": "ng test",
-    "lint": "ng lint",
-    "e2e": "ng e2e"
+    "lint": "ng lint"
   },
   "private": true,
   "dependencies": {