chore: remove go.rice from Lotus

[rjan90]

Related Issues

Closes: #6715

Proposed Changes

Removing go.rice completely from Lotus.

Checklist

Before you mark the PR ready for review, please make sure that:

• Commits have a clear commit message.
• PR title conforms with contribution conventions
• Update CHANGELOG.md or signal that this change does not need it per contribution conventions
• New features have usage guidelines and / or documentation updates in
  • Lotus Documentation
  • Discussion Tutorials
• Tests exist for new functionality or change in behavior
• CI is green

[ribasushi]

I do not believe the changeset is that simple:

~$ FULLNODE_API_INFO=wss://api.chain.love ./lotus-fountain run 
2025-01-03T20:05:54.624+0100    INFO    main    lotus-fountain/main.go:35       Starting fountain
2025-01-03T20:05:54.624+0100    WARN    cliutil util/apiinfo.go:94      API Token not set and requested, capabilities might be limited.
2025-01-03T20:05:55.669+0100    INFO    main    lotus-fountain/main.go:110      Remote version: 1.30.0+mainnet+git.12e6428
2025-01-03T20:05:55.669+0100    ERROR   main    lotus-fountain/main.go:163      failed to parse funds template: open site/funds.html: no such file or directory
2025-01-03T20:05:55.669+0100    ERROR   main    lotus-fountain/main.go:181      failed to parse datacap template: open site/datacap.html: no such file or directory
Open http://127.0.0.1:7777

This is not enough: https://github.com/filecoin-project/lotus/pull/12806/files#diff-eb5becac460b911047484bb06a7c61019cc1efe1062005cb1367006e7bc2c10fR134

@ribasushi is right (thanks Riba)