*: remove tikv-importer

[csuzhangxc]

What problem does this PR solve?

What is changed and how does it work?

Code changes

• Has Go code change
• Has CI related scripts change

Tests

• Unit test
• E2E test
• Manual test
• No code

Side effects

• Breaking backward compatibility
• Other side effects:

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release Notes

Please refer to Release Notes Language Style Guide before writing the release note.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Once this PR has been reviewed and has the lgtm label, please ask for approval from csuzhangxc. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

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[csuzhangxc]

/cherry-pick release-1.5

[ti-chi-bot]

@csuzhangxc: once the present PR merges, I will cherry-pick it on top of release-1.5 in the new PR and assign it to you.

In response to this:

/cherry-pick release-1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[codecov-commenter]

Codecov Report

Merging #5391 (db6ae68) into master (a076c0e) will increase coverage by 3.42%.
Report is 1 commits behind head on master.
The diff coverage is 33.33%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5391      +/-   ##
==========================================
+ Coverage   61.60%   65.03%   +3.42%     
==========================================
  Files         228      239      +11     
  Lines       28864    32613    +3749     
==========================================
+ Hits        17782    21209    +3427     
- Misses       9340     9637     +297     
- Partials     1742     1767      +25     

Flag	Coverage Δ
e2e	41.41% <ø> (?)
unittest	61.58% <33.33%> (-0.03%)	⬇️

[csuzhangxc]

/run-pull-e2e-kind

[csuzhangxc]

/run-all-tests

[csuzhangxc]

/run-pull-e2e-kind-br

[csuzhangxc]

/run-pull-e2e-kind-across-kubernetes

[csuzhangxc]

/run-pull-e2e-kind

[csuzhangxc]

/run-pull-e2e-kind-br

[csuzhangxc]

/run-pull-e2e-kind-br

[csuzhangxc]

/run-pull-e2e-kind-across-kubernetes

[csuzhangxc]

/run-pull-e2e-kind-tikv-scale-simultaneously

[ti-chi-bot]

@csuzhangxc: new pull request created to branch release-1.5: #5394.

In response to this:

/cherry-pick release-1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.