org root set delete button hide

maxkey-web-frontend/maxkey-web-mgt-app/src/app/routes/organizations/organizations.component.html

@@ -91,7 +91,9 @@
                 <button nz-button type="button" (click)="onEdit($event, data.id)" style="float: left">
                   {{ 'mxk.text.edit' | i18n }}
                 </button>
-                <button nz-button type="button" (click)="onDelete($event, data.id)" nzDanger>{{ 'mxk.text.delete' | i18n
+                <button
+                  *ngIf="data.parentId != null && data.parentId != '-1' && data.parentId != '0' && data.id != data.instId"
+                  nz-button type="button" (click)="onDelete($event, data.id)" nzDanger>{{ 'mxk.text.delete' | i18n
                   }}</button>
               </div>
             </td>