Update package.json

Reverting since the app now uses the library instead of the npm package

Author: jeanettephung

package.json

@@ -26,7 +26,6 @@
     "rxjs": "~7.8.1",
     "tslib": "^2.6.1",
     "zingchart": "latest",
-    "zingchart-angular": "^2.0.0",
     "zingchart-constants": "github:zingchart/zingchart-constants#master",
     "zone.js": "~0.13.1"
   },