We canceled our Java SE subscription and decided to switch to OpenJDK. In this case, do we need to de-install Java SE?

Go to manufacturer overview

Yes, as soon as you have canceled your Java SE subscription or decided not to renew, you must have de-install all components belonging to the Java SE installation by the end of the subscription term.

Soure: License Definition and Rules_Oracle_2020-03-11

License Definitions and Rules_Oracle_en_2020-03-11Download