no server.request-batch-enable-cross-command in V5.0.0 (#5414)

[ti-srebot]

cherry-pick #5414 to master
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---

The parameter prevent the TiKV startup.
unknown configuration options: server.request-batch-enable-cross-command

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[ti-srebot]

@dbsid please accept the invitation then you can push to the cherry-pick pull requests.
https://github.com/ti-srebot/docs/invitations

[TomShawn]

/label require-LGT1
/lgtm

[ti-chi-bot]

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[TomShawn]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 2accf83