optimize: remove the useless file

[lightClouds917]

• I have registered the PR changes.

Ⅰ. Describe what this PR did

remove:the duplicate header

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9a58770) 48.99% compared to head (5e399c0) 48.99%.

Additional details and impacted files

@@            Coverage Diff            @@
##                2.x    #6192   +/-   ##
=========================================
  Coverage     48.99%   48.99%           
+ Complexity     4782     4781    -1     
=========================================
  Files           915      915           
  Lines         31892    31892           
  Branches       3853     3853           
=========================================
  Hits          15624    15624           
+ Misses        14706    14705    -1     
- Partials       1562     1563    +1     

see 2 files with indirect coverage changes

[slievrly]

It looks like this file has been entirely commented out. I suggest we just delete it.

[lightClouds917]

It looks like this file has been entirely commented out. I suggest we just delete it.

ok,i will delete it

[funky-eyes]

我不理解为何要单独提pr删除该无用文件，而不是提交一份将相关测试用例完善的pr来去除这个无效文件？
I don't understand why I need to mention PR to delete this useless file separately, instead of submitting a PR that perfects the relevant test cases to remove this invalid file?

[lightClouds917]

我不理解为何要单独提pr删除该无用文件，而不是提交一份将相关测试用例完善的pr来去除这个无效文件？ I don't understand why I need to mention PR to delete this useless file separately, instead of submitting a PR that perfects the relevant test cases to remove this invalid file?

This pr has nothing to do with test cases ，it is intended to completely clean up the outdated license headers in the project, which is the point. After this pr, there is no “Copyright 1999-2019 Seata.io Group."

[funky-eyes]

LGTM