[KYUUBI #2841] [1.5] Revert "[KYUUBI #2211] [Improvement] Add CHANGEL…

…OG.md to codebase for maintaining release notes"

This reverts commit 9fce626.

### _Why are the changes needed?_

unnecessary to backport into branch-1.5

### _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 #2841 from ulysses-you/revert-changelog.

Closes #2841

Closes #2211

5bab4a7 [ulysses-you] Revert "[KYUUBI #2211] [Improvement] Add CHANGELOG.md to codebase for maintaining release notes"

Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>