DUMPER: Remove old build instructions

Author: djsrv

dumper-companion/README.md

@@ -5,14 +5,7 @@ a format that modern operating systems can't natively handle.
 
 This companion program extracts game data from an HFS disk image and formats it for use in ScummVM.
 
-This repository contains code ported/adapted from:
+This contains code ported/adapted from:
 - https://github.com/scummvm/scummvm/blob/master/devtools/dumper-companion.py
 - https://github.com/elliotnunn/machfs/
 - https://github.com/lyngklip/structjs
-
-## How to Build
-
-1. `npm install`
-2. `npm run build`
-
-The app will be generated in the `dist` directory. These files be placed on a static web server.