Revert kernel/src/table_changes/scan.rs

[OussamaSaoudi-db]

What changes are proposed in this pull request?

This removes files that were accidentally added in prior PRs that were un-reviewed in #505 and #506.

How was this change tested?

[zachschuermann]

rename to revert kernel/src/table_changes/scan.rs

and we can include detail in the PR desc. that this removes unreviewed code etc

[nicklan]

lgtm assume tests pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.43%. Comparing base (329b16b) to head (ad1de57).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #529      +/-   ##
==========================================
- Coverage   80.43%   80.43%   -0.01%     
==========================================
  Files          62       62              
  Lines       13645    13645              
  Branches    13645    13645              
==========================================
- Hits        10976    10975       -1     
- Misses       2112     2114       +2     
+ Partials      557      556       -1     

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[scovich]

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