#885 remove redundant config

src/app/+item-page/simple/item-types/publication/publication.component.html

@@ -8,13 +8,13 @@
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">
-    <ng-container *ngIf="!mediaViewer.enable">
+    <ng-container *ngIf="!mediaViewer.image">
     
       <ds-metadata-field-wrapper>
         <ds-thumbnail [thumbnail]="getThumbnail() | async"></ds-thumbnail>
       </ds-metadata-field-wrapper>
     </ng-container>
-    <ng-container *ngIf="mediaViewer.enable">
+    <ng-container *ngIf="mediaViewer.image">
       <ds-media-viewer [item]="object" [imageOptions]="mediaViewer.image" [videoOptions]="mediaViewer.video"></ds-media-viewer>
     </ng-container>
     <ds-item-page-file-section [item]="object"></ds-item-page-file-section>

src/config/media-viewer-config.interface.ts

@@ -1,7 +1,6 @@
 import { Config } from './config.interface';
 
 export interface MediaViewerConfig extends Config {
-  enable: boolean;
   image: boolean;
   video: boolean;
 }

src/environments/environment.common.ts

@@ -223,7 +223,6 @@ export const environment: GlobalConfig = {
   // Whether the UI should rewrite file download URLs to match its domain. Only necessary to enable when running UI and REST API on separate domains
   rewriteDownloadUrls: false,
   mediaViewer: {
-    enable: true,
     image: true,
     video: true,
   },