Merge pull request #16534 from sciecode/dev11

update legacy utils/builds readme

utils/build/README.md

@@ -1,8 +0,0 @@
-## Setup
-
-- Install [Node.js](https://nodejs.org/)
-- Execute `npm install`
-
-## Build
-
-- Execute `npm run build` (`npm run build-closure` or `npm run build-uglify` for minifying)