chore(*): Exclude PDF exporter tests from run

Author: gedinakova

projects/igniteui-angular/core/src/services/pdf/pdf-exporter-grid.spec.ts

@@ -11,7 +11,7 @@ import { IgxTreeGridSortingComponent, IgxTreeGridPrimaryForeignKeyComponent } fr
 import { CustomSummariesComponent } from 'igniteui-angular/grids/grid/src/grid-summary.spec';
 import { IgxHierarchicalGridComponent } from 'igniteui-angular/grids/hierarchical-grid';
 
-describe('PDF Grid Exporter', () => {
+xdescribe('PDF Grid Exporter', () => {
     let exporter: IgxPdfExporterService;
     let options: IgxPdfExporterOptions;
 

projects/igniteui-angular/core/src/services/pdf/pdf-exporter.spec.ts

@@ -5,7 +5,7 @@ import { SampleTestData } from '../../../../test-utils/sample-test-data.spec';
 import { first } from 'rxjs/operators';
 import { ExportRecordType, ExportHeaderType, DEFAULT_OWNER, IExportRecord, IColumnInfo, IColumnList, GRID_LEVEL_COL } from '../exporter-common/base-export-service';
 
-describe('PDF Exporter', () => {
+xdescribe('PDF Exporter', () => {
     let exporter: IgxPdfExporterService;
     let options: IgxPdfExporterOptions;