reduce external dependencies (#705)

src/app/extensions.module.ts

@@ -1,19 +1,10 @@
 import { NgModule } from '@angular/core';
 import { AcaDevToolsModule } from '@denysvuika/aca-dev-tools';
-import { CodeEditorModule } from '@ngstack/code-editor';
 
 // Main entry point for external extensions only.
 // For any application-specific code use CoreExtensionsModule instead.
 
 @NgModule({
-  imports: [
-    CodeEditorModule.forRoot({
-      // use local Monaco installation
-      baseUrl: 'assets/monaco',
-      // use local Typings Worker
-      typingsWorkerUrl: 'assets/workers/typings-worker.js'
-    }),
-    AcaDevToolsModule
-  ]
+  imports: [AcaDevToolsModule]
 })
 export class AppExtensionsModule {}