*: remove the limit on single column data size

[ran-huang]

What is changed, added or deleted? (Required)

There is no such limit.

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• master (the latest development version)
• v7.2 (TiDB 7.2 versions)
• v7.1 (TiDB 7.1 versions)
• v7.0 (TiDB 7.0 versions)
• v6.6 (TiDB 6.6 versions)
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• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
• v5.1 (TiDB 5.1 versions)
• v5.0 (TiDB 5.0 versions)

What is the related PR or file link(s)?

• This PR is translated from: *: remove the limit on single column data size docs-cn#14291
• Other reference link(s):

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• Delete files
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• Might cause conflicts after applied to another branch

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[lilin90]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-06-21 08:02:19.010486728 +0000 UTC m=+176304.411737174: ☑️ agreed by lilin90.

[ran-huang]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ran-huang

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #13952.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-5.4: #13953.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #13954.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #13955.