Remove unused imports

Author: ybnd

src/app/core/auth/auth-request.service.ts

@@ -1,5 +1,5 @@
 import { Observable } from 'rxjs';
-import { distinctUntilChanged, filter, map, mergeMap, switchMap, tap, take } from 'rxjs/operators';
+import { distinctUntilChanged, filter, map, switchMap, tap, take } from 'rxjs/operators';
 import { HALEndpointService } from '../shared/hal-endpoint.service';
 import { RequestService } from '../data/request.service';
 import { isNotEmpty } from '../../shared/empty.util';

src/modules/app/server-init.service.ts

@@ -6,7 +6,7 @@
  * http://www.dspace.org/license/
  */
 import { InitService } from '../../app/init.service';
-import { Store, select } from '@ngrx/store';
+import { Store } from '@ngrx/store';
 import { AppState } from '../../app/app.reducer';
 import { TransferState } from '@angular/platform-browser';
 import { CorrelationIdService } from '../../app/correlation-id/correlation-id.service';
@@ -20,8 +20,7 @@ import { MetadataService } from '../../app/core/metadata/metadata.service';
 import { BreadcrumbsService } from '../../app/breadcrumbs/breadcrumbs.service';
 import { CSSVariableService } from '../../app/shared/sass-helper/sass-helper.service';
 import { ThemeService } from '../../app/shared/theme-support/theme.service';
-import { take, distinctUntilChanged, find } from 'rxjs/operators';
-import { isAuthenticationBlocking } from '../../app/core/auth/selectors';
+import { take } from 'rxjs/operators';
 
 /**
  * Performs server-side initialization.