Completed deprecation of streamingOnly mode for subscriptions

src/app/dialogs/edit-subscription-dialog/edit-subscription-dialog.component.html

@@ -34,11 +34,6 @@
                     </mat-select>
                 </mat-form-field>
             </div>
-            <div class="col-12 mt-1">
-                <div>
-                    <mat-checkbox [disabled]="new_sub.type === 'audio'" [(ngModel)]="new_sub.streamingOnly"><ng-container i18n="Streaming-only mode">Streaming-only mode</ng-container></mat-checkbox>
-                </div>
-            </div>
             <div class="col-12 mb-3">
                 <mat-form-field color="accent">
                     <input [(ngModel)]="new_sub.custom_args" matInput placeholder="Custom args" i18n-placeholder="Subscription custom args placeholder">

src/app/dialogs/subscribe-dialog/subscribe-dialog.component.html

@@ -47,11 +47,6 @@
                     <mat-checkbox [(ngModel)]="audioOnlyMode"><ng-container i18n="Streaming-only mode">Audio-only mode</ng-container></mat-checkbox>
                 </div>
             </div>
-            <div class="col-12">
-                <div>
-                    <mat-checkbox [disabled]="audioOnlyMode" [(ngModel)]="streamingOnlyMode"><ng-container i18n="Streaming-only mode">Streaming-only mode</ng-container></mat-checkbox>
-                </div>
-            </div>
             <div class="col-12 mb-3">
                 <mat-form-field color="accent">
                     <input [(ngModel)]="customArgs" matInput placeholder="Custom args" i18n-placeholder="Subscription custom args placeholder">

src/app/dialogs/subscribe-dialog/subscribe-dialog.component.ts

@@ -21,9 +21,6 @@ export class SubscribeDialogComponent implements OnInit {
   // state
   subscribing = false;
 
-  // no videos actually downloaded, just streamed
-  streamingOnlyMode = false;
-
   // audio only mode
   audioOnlyMode = false;