How to remove rowHeaders from handsontable in react js?

I have a default table of 10 rows, and then I add extra rows, lets suppose 5 extra rows. Now the total number of rows becomes 15. After filling up all the data and uploading it to database. I regenerate the table with default 10 rows. Now the problem is, after is regenerates the table. The row headers of the extra 5 rows are still there. Check image here. [![enter image description here][1]][1] I am surprised, even after regenerating the table why there are still rowHeaders for the extra rows.
Table generating code,

generateTable = () => {
    var container = document.getElementById("bulkUploadChassisOwner");

    hotTable = createHandsonTable(
      container,
      this.bulkData,
      this.props.isOnBoarding,
      this.height,
      this.Headers,
      this.columns,
      [],
      true,
      this.state.trimRows
    );
   
    for (let i = 0; i < 10; i++) {
      this.addRowToTable();
    }
    console.log(hotTable.getRowHeader());
    Handsontable.hooks.add(
      "afterColumnMove", () => {
        this.getColHeader()
      },
      hotTable
    )

    Handsontable.hooks.add(
      "afterChange",
      () => {
        if (!this.props.valModified && this.props.onValModified)
          this.props.onValModified(true);
        this.showTooltip();
        this.resizeTable();
      },
      hotTable
    );

    Handsontable.hooks.add(
      "afterScrollHorizontally",
      () => {
        this.showTooltip();
      },
      hotTable
    );
    Handsontable.hooks.add(
      "afterScrollVertically",
      () => {
        this.showTooltip();
      },
      hotTable
    );
    Handsontable.hooks.add(
      "afterCreateRow",
      () => {
        this.resizeTable();
      },
      hotTable
    );
    hotTable.render();

    hotTable.updateSettings({
      beforeKeyDown(e) {
        const { row } = hotTable.getActiveEditor();
        if(e.keyCode === 40 && (row + 1) === hotTable.countRows()) {
          hotTable.alter("insert_row", hotTable.countRows(), 1, {});
        }
      }
    });
   
  }

I have tried trimming rows after uploading data, but did not work. [1]: https://i.stack.imgur.com/Lj78d.png