chore(*): fixing tree-grid test

Author: kdinev

projects/igniteui-angular/src/lib/grids/tree-grid/tree-grid-summaries.spec.ts

@@ -12,7 +12,6 @@ import {
 import { configureTestSuite } from '../../test-utils/configure-suite';
 import { setupGridScrollDetection } from '../../test-utils/helper-utils.spec';
 import { wait, UIInteractions } from '../../test-utils/ui-interactions.spec';
-import { IgxTreeGridRowComponent } from './tree-grid-row.component';
 import { GridSummaryFunctions, GridFunctions } from '../../test-utils/grid-functions.spec';
 import { IgxNumberFilteringOperand } from '../../data-operations/filtering-condition';
 import { DebugElement } from '@angular/core';
@@ -431,7 +430,7 @@ describe('IgxTreeGrid - Summaries #tGrid', () => {
 
             let summaryRow = GridSummaryFunctions.getSummaryRowByDataRowIndex(fix, 7);
             GridSummaryFunctions.verifyColumnSummaries(summaryRow, 3,
-                ['Count', 'Min', 'Max', 'Sum', 'Avg', 'Test'], ['3', '29', '43', '103', '34.333333333333336', '2']);
+                ['Count', 'Min', 'Max', 'Sum', 'Avg', 'Test'], ['3', '29', '43', '103', '34.333', '2']);
 
             summaryRow = GridSummaryFunctions.getSummaryRowByDataRowIndex(fix, 6);
             GridSummaryFunctions.verifyColumnSummaries(summaryRow, 3,