[FLINK-31597][table] Cleanup usage of deprecated TableEnvironment#registerFunction

[snuyanzin]

What is the purpose of the change

Removes the usage of the deprecated method TableEnvironment#registerFunction.

The PR is based on #23748

Brief change log

• Replace the usage of TableEnvironment#registerFunction with TableEnvironment#createTemporarySystemFunction

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes / no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes / no)
• The serializers: (yes / no / don't know)
• The runtime per-record code paths (performance sensitive): (yes / no / don't know)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / no / don't know)
• The S3 file system connector: (yes / no / don't know)

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

[snuyanzin]

@wuchong since you were involved in this, could you please have a look?

It seems I found a way to clean this deprecated things

[flinkbot]

CI report:

• ae90c41 Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[wuchong]

cc @lincoln-lil , @LadyForest , could you help to review this?

[LadyForest]

cc @lincoln-lil , @LadyForest , could you help to review this?

Sure. I'll take a look ASAP.

[snuyanzin]

the failure is unrelated and the reason is FLINK-33568

[snuyanzin]

@flinkbot run azure

[LadyForest]

Hi @snuyanzin, thanks for the contribution. The PR looks good to me, and I just left some minor comments.

[LadyForest]

Thanks for the update, looks good to me :)

[LadyForest]

I just noticed that the master branch has been updated, would you mind rebasing and resolving conflicts? @snuyanzin

[snuyanzin]

Thanks for notifying about that, resolved the conflicts

I'm going to merge it once ci is passed

i'm going to merge as 2 commits as each commit is related to a different jira issue

[JingGe]

LGTM

[snuyanzin]

thanks for taking a look