### _Why are the changes needed?_
The changelogs are exported from the git command, which is quite duplicated and does not help much, after removing, users still can get them from GitHub or git history easily.
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#4094 from pan3793/changelog.
Closes#4094
2d0bfe07 [Cheng Pan] [INFRA] Remove changelogs and generate_changelog.sh
Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>
9c312bf281