Remove support for database versions that are unsupported by vendors 6.3 edition
Description
We have lots of code to handle database versions that are unsupported already or will be unsupported in the near future. I suggest we get rid of the old cruft as that makes a lot of the code way easier to read and understand. See the subtasks for database specific cleanups.
We have lots of code to handle database versions that are unsupported already or will be unsupported in the near future. I suggest we get rid of the old cruft as that makes a lot of the code way easier to read and understand. See the subtasks for database specific cleanups.
Follow up of for Hibernate 6.3.