style(lint): fix spacing issues and remove unused imports and functions

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Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

• Remove the empty function boxplotVisual
• Add a diff filter for the lint workflow.
• Fix some lint issues about the spacing (See also chore(lint): enforce consistent spacing after comment starts #17606)
• Remove some unused imports

Fixed issues

• fix(marker): markArea of bar series now covers whole specified categories #17098

Document Info

One of the following should be checked.

• This PR doesn't relate to document changes
• The document should be updated later
• The document changes have been made in apache/echarts-doc#xxx

Misc

ZRender Changes

• This PR depends on ZRender changes (ecomfe/zrender#xxx).

Related test cases or examples to use the new APIs

N.A.

Others

Merging options

• Please squash the commits into a single one when merging.

Other information

[echarts-bot]

Thanks for your contribution!
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The pull request is marked to be PR: author is committer because you are a committer of this project.

⚠️ MISSING DOCUMENT INFO: Please make sure one of the document options are checked in this PR's description. Search "Document Info" in the description of this PR. This should be done either by the author or the reviewers of the PR.

[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍