chore: remove outputPath from demo's angular.json to follow newly scaffolded projects setup

Author: pieh

demo/angular.json

@@ -13,7 +13,6 @@
         "build": {
           "builder": "@angular/build:application",
           "options": {
-            "outputPath": "dist/demo",
             "index": "src/index.html",
             "browser": "src/main.ts",
             "polyfills": [