Format docs with Prettier 1.13

scripts/build-docs.js

@@ -6,7 +6,6 @@ const path = require("path");
 const shell = require("shelljs");
 
 const rootDir = path.join(__dirname, "..");
-const staticDir = path.join(rootDir, "website/static");
 const docs = path.join(rootDir, "website/static/lib");
 
 function pipe(string) {