How to remove scroll bar from excel web access web part in sharepoint 2013?

To accomplish the above, you have to do two things.
1. In Dashboard Designer, set the sizing of your Excel report to auto.
2. This is what got me: published PivotCharts and PivotTables should not be on a dedicated sheet in Excel. Published PivotCharts and PivotTables should not be on a dedicated sheet in Excel. They must be embedded as an object within a spreadsheet.
If you continue to experience scroll bars, resize your chart within Excel and republish. From there, you may need to modify the size of your web part in its properties.
Another approach would be try below article and include that script to fix this
https://www.nothingbutsharepoint.com/2009/01/05/jquery-for-everyone-dynamically-sizing-excel-web-parts-aspx/

Hope this helps.

Hi,
 https://www.nothingbutsharepoint.com/2009/01/05/jquery-for-everyone-dynamically-sizing-excel-web-parts-aspx

  I can see some script here, If I add this script to the page by scipt editor , scroll bar dis appear ?  any another steps I need to take care?

Hi,
 
  It's not working. Did you try by yourself ? Please advice.