How to clear/delete a table that is present in excel file

I know there is clear table keyword but unable to clear a existing table of a sheet or maybe the usage is wrong.
Here is my code

To clear table
Open Workbook ${CURDIR}${/}demofile.xlsx

used both read worksheet as table and read worksheet but nothing seems to #work

${mytable}=    Read Worksheet    name=demosheet    header=True
Clear Table    ${mytable}
Save Workbook
Close Workbook