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/start-flipper-server-dev.ts

@@ -16,11 +16,9 @@ import {
   prepareDefaultPlugins,
 } from './build-utils';
 import Watchman from './watchman';
-import {serverStaticDir} from './paths';
 import isFB from './isFB';
 import yargs from 'yargs';
 import ensurePluginFoldersWatchable from './ensurePluginFoldersWatchable';
-import {remove} from 'fs-extra';
 
 const argv = yargs
   .usage('yarn flipper-server [args]')
@@ -179,8 +177,6 @@ async function startWatchChanges() {
 }
 
 (async () => {
-  await remove(serverStaticDir);
-
   if (dotenv && dotenv.parsed) {
     console.log('✅  Loaded env vars from .env file: ', dotenv.parsed);
   }