tidb: remove INCREMENTAL syntax of analyze table statement

[Oreoxmt]

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Follow up: pingcap/docs-cn#15270
We should drop this syntax on the docs. This feature was removed by this PR: https://github.com/pingcap/tidb/pull/47544/files

Right now, if you try it on TiDB you will get

mysql> analyze incremental table t index idx;
ERROR 1105 (HY000): the incremental analyze feature has already been removed in TiDB v7.5.0, so this will have no effect

• master (the latest development version)
• v8.0 (TiDB 8.0 versions)
• v7.6 (TiDB 7.6 versions)
• v7.5 (TiDB 7.5 versions)
• v7.4 (TiDB 7.4 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)
• v6.1 (TiDB 6.1 versions)
• 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: tidb: remove INCREMENTAL syntax of analyze table statement docs-cn#16647
• Other reference link(s): tidb: remove fast and incremental analyze docs-cn#15270

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[Oreoxmt]

/cc @hi-rustin

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[LGTM Timeline notifier]

Timeline:

• 2024-02-23 09:13:55.182994565 +0000 UTC m=+607723.930617677: ☑️ agreed by hfxsd.

[Oreoxmt]

/approve

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #16596.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.6: #16597.