Remove unused dependency ng2-page-scroll

package-lock.json

@@ -12247,12 +12247,6 @@
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
       "dev": true
     },
-    "ng2-page-scroll": {
-      "version": "4.0.0-beta.2",
-      "resolved": "https://registry.npmjs.org/ng2-page-scroll/-/ng2-page-scroll-4.0.0-beta.2.tgz",
-      "integrity": "sha1-6sElkp8XFzA5UGV8ekYKns7wsDs=",
-      "dev": true
-    },
     "ngm-cli": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/ngm-cli/-/ngm-cli-0.4.0.tgz",

package.json

@@ -90,7 +90,6 @@
     "lodash": "4.17.4",
     "markdown-loader": "^0.1.7",
     "marked": "0.3.6",
-    "ng2-page-scroll": "4.0.0-beta.2",
     "ngm-cli": "0.4.0",
     "ngx-bootstrap": "1.6.6",
     "npm-run-all": "^4.0.1",