[Chore] Remove unused SQLIntegrityConstraintViolationException in JdbcOperator

[ruanwenjun]

Purpose of the pull request

Brief change log

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This pull request is code cleanup without any test coverage.

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This pull request is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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Pull Request Notice

Pull Request Notice

If your pull request contain incompatible change, you should also add it to docs/docs/en/guide/upgrede/incompatible.md

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 41.01%. Comparing base (b34fe46) to head (f6e877d).

:exclamation: Current head f6e877d differs from pull request most recent head 01fe97a

Please upload reports for the commit 01fe97a to get more accurate results.

Files	Patch %	Lines
...inscheduler/plugin/registry/jdbc/JdbcOperator.java	0.00%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #16200 +/- ## ============================================ - Coverage 41.02% 41.01% -0.01% + Complexity 5161 5157 -4 ============================================ Files 1400 1400 Lines 44860 44860 Branches 4746 4747 +1 ============================================ - Hits 18402 18398 -4 - Misses 24651 24656 +5 + Partials 1807 1806 -1 ```

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[sonarcloud[bot]]

Quality Gate failed

Failed conditions
51.8% Coverage on New Code (required ≥ 60%)

See analysis details on SonarCloud