Revert "jaebradley/learner 3600 upsell modal"

package.json

@@ -14,7 +14,6 @@
     "backbone": "~1.3.2",
     "backbone.paginator": "~2.0.3",
     "bootstrap": "v4.0.0-beta.2",
-    "classnames": "^2.2.5",
     "coffee-loader": "^0.7.3",
     "coffee-script": "1.6.1",
     "css-loader": "^0.28.5",
@@ -38,7 +37,6 @@
     "raw-loader": "^0.5.1",
     "react": "^15.5.4",
     "react-dom": "^15.5.4",
-    "react-slick": "^0.16.0",
     "requirejs": "~2.3.2",
     "rtlcss": "^2.2.0",
     "sass-loader": "^6.0.6",