refactor(@angular/cli): Simplify retrival of collection name

Author: Keen Yee Liau

packages/angular/cli/commands/new-impl.ts

@@ -17,11 +17,7 @@ export class NewCommand extends SchematicCommand<NewCommandSchema> {
  schematicName = 'ng-new';
 
  async initialize(options: NewCommandSchema & Arguments) {
- if (options.collection) {
- this.collectionName = options.collection;
- } else {
- this.collectionName = await this.parseCollectionName(options);
- }
+ this.collectionName = options.collection || await this.getDefaultSchematicCollection();
 
  return super.initialize(options);
  }
@@ -43,7 +39,4 @@ export class NewCommand extends SchematicCommand<NewCommandSchema> {
  });
  }
 
- private async parseCollectionName(options: any): Promise<string> {
- return options.collection || this.getDefaultSchematicCollection();
- }
 }