#1076 Remove Unused rxjs operator imports

apps/sales/src/app/core/services/content-header.service.ts

@@ -1,13 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Observable, of } from 'rxjs';
-import {
-  map,
-  switchMap,
-  filter,
-  tap,
-  shareReplay,
-  startWith,
-} from 'rxjs/operators';
+import { map, switchMap, filter } from 'rxjs/operators';
 import { LocationService } from './location-service';
 import { RemissionOverlayService } from '../../modules/remission/services';
 import { Select } from '@ngxs/store';