Remove `sass`, we are using `node-sass` instead.

package-lock.json

@@ -17122,12 +17122,6 @@
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
       "dev": true
     },
-    "sass": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/sass/-/sass-0.5.0.tgz",
-      "integrity": "sha1-ne4Rg6D0ADYfLF00U78uVHBeA/k=",
-      "dev": true
-    },
     "sass-graph": {
       "version": "2.2.4",
       "resolved": "https://registry.npmjs.org/sass-graph/-/sass-graph-2.2.4.tgz",

package.json

@@ -62,7 +62,6 @@
     "react-dom": "^16.4.0",
     "redux": "^3.7.2",
     "replace-x": "^1.5.0",
-    "sass": "0.5.0",
     "temp-write": "^3.4.0",
     "tinyify": "^2.4.0",
     "typescript": "^2.8.1",