[FEA]: Remove subgraph extraction

[jnke2016]

Is this a new feature, an improvement, or a change to existing functionality?

New Feature

How would you describe the priority of this feature request

Low (would be nice)

Please provide a clear description of problem this feature solves

Subgraph extraction is deprecated since 23.06 and was replaced by induced subgraph

Describe your ideal solution

Remove subgraph extraction form the python API

Describe any alternatives you have considered

No response

Additional context

No response

Code of Conduct

• [x] I agree to follow cuGraph's Code of Conduct
• [x] I have searched the open feature requests and have found no duplicates for this feature request