Fix issue where TypeScript errors in scripts/ folder weren't picked up

Summary: This diff fixes an issue where the `scripts` folder wasn't automatically type checked by TypeScript, and as a result `yarn flipper-server` was broken atm.

Reviewed By: nikoant

Differential Revision: D33348825

fbshipit-source-id: 059a834cacb881d45ae4b0933af3f1feabb90182

desktop/scripts/build-utils.ts

@@ -36,7 +36,6 @@ import {
   serverDir,
   rootDir,
   browserUiDir,
-  serverStaticDir,
 } from './paths';
 import pFilter from 'p-filter';
 import child from 'child_process';