Dependency update and cleanup

Author: pozil

package-lock.json

@@ -7,16 +7,14 @@
   "private": true,
   "main": "server/server.js",
   "dependencies": {
-    "@salesforce-ux/design-system": "^2.11.9",
-    "body-parser": "^1.19.0",
+    "@salesforce-ux/design-system": "^2.12.1",
     "browserify": "^16.5.1",
     "dotenv": "^8.2.0",
     "express": "^4.17.1",
     "express-session": "^1.17.1",
     "jsforce": "^1.9.3",
     "react": "^15.2.0",
-    "react-dom": "^15.2.0",
-    "underscore": "^1.10.2"
+    "react-dom": "^15.2.0"
   },
   "devDependencies": {
     "babelify": "^7.3.0",