uts46, sha3, and subgraph plugins are no longer in default plugins

[krisbitney]

Parent story: https://github.com/polywrap/monorepo/issues/1124

The uts46, sha3, and subgraph plugins can be replaced with Rust wrappers. Each of these plugins can be removed from default plugins once it has a working wrapper.

• [ ] uts46 plugin is no longer in the default plugins
• [ ] sha3 plugin is no longer in the default plugins
• [ ] subgraph plugin is no longer in the default plugins

Depends on:

• https://github.com/polywrap/integrations/issues/102
• https://github.com/polywrap/integrations/issues/103
• https://github.com/polywrap/integrations/issues/104