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### _Why are the changes needed?_
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To simplify the usage and be more user friendly, combine `kyuubi.engine.deregister.exception.messages` and `kyuubi.engine.deregister.exception.stacktraces` to `kyuubi.engine.deregister.exception.messages`.
### _How was this patch tested?_
Existing UT.
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [x] [Run test](https://kyuubi.readthedocs.io/en/latest/tools/testing.html#running-tests) locally before make a pull request
Closes#565 from turboFei/KYUUBI-544-combine.
Closes#544
ee63f60 [fwang12] [KYUUBI #544] Combine deregister exception messages and stacktraces
Authored-by: fwang12 <fwang12@ebay.com>
Signed-off-by: Kent Yao <yao@apache.org>
913d3f19d4