test: remove unnecessary delay

Signed-off-by: Pranav C <pranavxc@gmail.com>

tests/playwright/tests/columnSingleSelect.spec.ts

@@ -78,7 +78,6 @@ test.describe('Single select', () => {
     });
 
     await grid.cell.selectOption.verify({ index: 0, columnHeader: 'SingleSelect', option: 'Option added from cell' });
-    await new Promise(resolve => setTimeout(resolve, 100000));
 
     await grid.column.delete({ title: 'SingleSelect' });
   });