Fix references dropdown for required fields.

src/Squidex/app/features/content/shared/field-editor.component.html

@@ -92,8 +92,7 @@
                             <sqx-references-dropdown
                                 [formControl]="control" 
                                 [language]="language"
-								[schemaId]="field.properties['schemaId']"
-								[isRequired]="field.properties['isRequired']">
+								[schemaId]="field.properties['schemaId']">
                             </sqx-references-dropdown>
                         </ng-container>
                     </ng-container>

src/Squidex/app/features/content/shared/references-dropdown.component.ts

@@ -59,9 +59,6 @@ export class ReferencesDropdownComponent extends StatefulControlComponent<State,
     @Input()
     public schemaId: string;
 
-    @Input()
-    public isRequired = false;
-
     @Input()
     public set language(value: AppLanguageDto) {
         this.languageField = value;
@@ -156,11 +153,7 @@ export class ReferencesDropdownComponent extends StatefulControlComponent<State,
             return { name, id: content.id };
         });
 
-        if (!this.isRequired) {
-            return [{ name: '- No Reference -' }, ...names];
-        }
-
-        return names;
+        return [{ name: '- No Reference -' }, ...names];
     }
 
     public trackByContent(content: ContentDto) {