fix(*): prod build fails internally

Author: kdinev

projects/igniteui-angular/src/lib/grids/tree-grid/tree-grid.component.html

@@ -3,7 +3,6 @@
 <igx-grid-header-row class="igx-grid-thead" tabindex="0"
     [grid]="this"
     [hasMRL]="hasColumnLayouts"
-    [activeDescendant]="activeDescendant"
     [width]="calcWidth"
     [pinnedStartColumnCollection]="pinnedStartColumns"
     [pinnedEndColumnCollection]="pinnedEndColumns"