Remove dead code from copy.js.

[desrosj]

This removes several groups from COPY_CONFIG that were moved to Grunt tasks for consistency. The copyDirectory() function is also being removed because it's never called.

Trac ticket: Core-64393.

Use of AI Tools

AI assistance: Yes
Tool(s): Claude Code
Model(s): Sonnet 4.6
Used for: Used to analyze the tools/gutenberg directory to find dead code and unused configuration values.

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[github-actions]

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[Copilot]

Pull request overview

This PR simplifies the Gutenberg-to-Core copy tooling by removing unused configuration and an unreferenced helper function, aligning remaining asset copying responsibilities with existing Grunt copy tasks (per Core-64393).

Changes:

• Removes unused COPY_CONFIG groups from tools/gutenberg/copy.js that are now handled by copy:gutenberg-* Grunt tasks.
• Removes the unused copyDirectory() helper and the last remaining call site.
• Trims an extraneous whitespace-only line in Gruntfile.js.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
tools/gutenberg/copy.js	Removes dead config entries and deletes the unused copyDirectory() implementation + call site.
Gruntfile.js	Whitespace-only adjustment in the build task area (no functional change).

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[peterwilsoncc]

Testing notes:

• rm -rf gutenberg .gutenberg-hash; npm ci; npm run grunt clean:qunit; npm run build:dev
• Opened network tools to disable caching
• Visited post editor, site editor, fonts library
• Created a gallery in a post of publicity stills from the hit Broadway musical Dear Evan Hansen (not the movie, ugh)
• Visited post on front end to ensure the block styles loaded as expected.

[desrosj]

Merged in r62071.