t/52: Removed the "Unlink" button from the toolbars

[oleq]

Suggested merge commit message (convention)

Other: Removed the "Unlink" button from the toolbars. Closes ckeditor/ckeditor5#4751.

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Additional information

Branches in other repositories:

• https://github.com/ckeditor/ckeditor5-block-quote/tree/t/ckeditor5-link/52
• https://github.com/ckeditor/ckeditor5-core/tree/t/ckeditor5-link/52
• https://github.com/ckeditor/ckeditor5-editor-inline/tree/t/ckeditor5-link/52
• https://github.com/ckeditor/ckeditor5-presets/tree/t/ckeditor5-link/52
• https://github.com/ckeditor/ckeditor5-ui/tree/t/ckeditor5-link/52

[Reinmar]

We were supposed to also remove the UI component for it.

[oleq]

Why exactly? People may want to use it after all.

[Reinmar]

Because, as disscussed, if we keep it in the code we need to maintain it. And if we don't use it, then it doesn't make much sense.

Plus, to keep the code size as low as possible, this should be a separate feature. That will avoid loading its icon.

[oleq]

OK, I removed the UI component. I also found out that I missed changes in the build-classic package so I updated it too.

The CI branch is https://github.com/ckeditor/ckeditor5/tree/t/ckeditor5-link/52.

[Reinmar]

You somehow missed all the docs:

[Reinmar]

I'll handle them while closing this PR.

[oleq]

The mystery why I missed them is folder_exclude_patterns in the ST project configuration :P

[Reinmar]

I thought so :D