I just submitted my daughter's tax return and accidently included my son's driver's license as well as issue date and expiration date. Is there a way to unsubmit ?

Unfortunately, you could not unsubmit the return.

The IRS checks the driver’s license number, expiration and issue dates. If the information is wrong, the IRS may reject your income tax return and you will be able to change the DL number, expiration and issue dates and e-file your daughter’s return again.