fix: delete data if top-level data is selected

src/components/schedule/tabs/tabs.component.html

@@ -3,17 +3,17 @@
                (selectedTabChange)="chooseTabs($event.index)">
   <mat-tab label="Группа">
     <div>
-      <app-group #groupTab (eventResult)="groupSelected($event)"/>
+      <app-group #groupTab/>
     </div>
   </mat-tab>
   <mat-tab label="Преподаватель">
     <div>
-      <app-professor #professorTab (eventResult)="professorSelected($event)"/>
+      <app-professor #professorTab/>
     </div>
   </mat-tab>
   <mat-tab label="Кабинет">
     <div>
-      <app-lecture-hall #lectureHallTab (eventResult)="lectureHallSelected($event)"/>
+      <app-lecture-hall #lectureHallTab/>
     </div>
   </mat-tab>