fix(CSV Export): Removed unused import.

Author: gedinakova

projects/igniteui-angular/src/lib/services/csv/char-separated-value-data.ts

@@ -1,6 +1,6 @@
 import { ExportUtilities } from '../exporter-common/export-utilities';
 import { yieldingLoop } from '../../core/utils';
-import { ExportHeaderType, IColumnInfo } from '../exporter-common/base-export-service';
+import { IColumnInfo } from '../exporter-common/base-export-service';
 
 /**
  * @hidden

projects/igniteui-angular/src/lib/services/csv/csv-exporter-grid.spec.ts

@@ -553,7 +553,6 @@ describe('CSV Grid Exporter', () => {
 
         it('should export pivot grid successfully.', async () => {
             await wait();
-            debugger
             const wrapper = await getExportedData(pivotGrid, options);
             wrapper.verifyData(wrapper.pivotGridData);
         });