Update CODEOWNERS

[tomqin93]

What this PR does / why we need it:
This PR removes user that have been removed from the organization

Will this PR make the community happier?
N/A

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

How is this PR tested

• N/A

Special notes for your reviewer:

Release note:

- Removed @BtXin and @seanli33056 from code owners file

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (43503cc) 54.88% compared to head (a74ea0f) 54.70%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #723      +/-   ##
==========================================
- Coverage   54.88%   54.70%   -0.18%     
==========================================
  Files          23       23              
  Lines        2283     2283              
==========================================
- Hits         1253     1249       -4     
- Misses        915      918       +3     
- Partials      115      116       +1     

see 1 file with indirect coverage changes

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