Update app-breadcrumb.service.ts

Removed the index from rxjs import

Author: sparun160782

Diff for: projects/coreui/angular/src/lib/breadcrumb/app-breadcrumb.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Router, ActivatedRoute, NavigationEnd } from '@angular/router';
-import { BehaviorSubject, Observable } from 'rxjs/index';
+import { BehaviorSubject, Observable } from 'rxjs';
 import { filter } from 'rxjs/operators';
 
 @Injectable()