[Feature] Delete old schema file

[eric666666]

Search before asking

• I searched in the issues and found nothing similar.

Motivation

Now, paimon cannot delete schema files, even old schema version file is not related to any snapshot.
It is not friendly for our situation that we will set a time attribute fields in table property to let other server know data synchronization progress. This will make each property update operation trigger a new paimon schema file.

Solution

I find a issue desribed same problem #2662.
This issue suggest use procedure to manual delete schema files. But I don't see any process.

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!

[tsreaper]

Even if a schema file is not the current schema of any snapshots, some data files might still be using this schema version. I see that you're willing to submit a PR, could you share your solution to this problem?