enhance: Remove not inuse binlog iterator

[XuanYang-cn]

See also: #41466

[mergify]

@XuanYang-cn Please associate the related issue to the body of your Pull Request. (eg. “issue: #”)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.48%. Comparing base (5219d9a) to head (d4080c5).
Report is 17 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #41359      +/-   ##
==========================================
- Coverage   80.48%   80.48%   -0.01%     
==========================================
  Files        1488     1487       -1     
  Lines      211245   211215      -30     
==========================================
- Hits       170017   169992      -25     
+ Misses      35061    35054       -7     
- Partials     6167     6169       +2     

Components	Coverage Δ
Client	79.01% <ø> (ø)
Core	72.67% <ø> (+0.01%)	⬆️
Go	81.98% <ø> (-0.01%)	⬇️

Files with missing lines	Coverage Δ
internal/storage/data_codec.go	76.56% <ø> (ø)

... and 27 files with indirect coverage changes

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[mergify]

@XuanYang-cn go-sdk check failed, comment rerun go-sdk can trigger the job again.

[mergify]

@XuanYang-cn E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[mergify]

@XuanYang-cn E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[XuanYang-cn]

/rerun-cpu-e2e

[XuanYang-cn]

/run-cpu-e2e

[tedxu]

/lgtm

[tedxu]

/approve

[sre-ci-robot]

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