refactor(@dpc-sdp/nuxt-ripple-cli): 🔥 remove favicon generator

[waitingallday]

Issue:

What I did

• No longer used (was only used adhoc anyway)
• Fixes https://github.com/dpc-sdp/ripple-framework/security/code-scanning/4

How to test

Checklist

For all PR's

• I've added relevant changes to the project Readme if needed
• I've updated the documentation site as needed
• I have added tests to cover my changes (if not applicable, please state why in a comment)

For new UI components only

• I have added a storybook story covering all variants
• I have checked a11y tab in storybook passes
• I have added cypress component tests (if the component is interactive)
• Any events are emitted on the event bus using emitRplEvent

[cypress]

ripple-framework    Run #2379

Run Properties:   Passed #2379  •  f1753d0951: refactor(@dpc-sdp/nuxt-ripple-cli): :fire: remove favicon generator

Project	ripple-framework
Branch Review	task/remove-favicon-generator
Run status	Passed #2379
Run duration	09m 10s
Commit	f1753d0951: refactor(@dpc-sdp/nuxt-ripple-cli): :fire: remove favicon generator
Committer	Jason Smith
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	211
View all changes introduced in this branch ↗︎