[FEA]: Drop p2p configuration option

[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

Medium

Please provide a clear description of problem this feature solves

p2p feature needs to be removed entirely because it was required when configuring NCCL however, the latest versions no longer require it.

Describe your ideal solution

Drop p2p in both cuGraph and Raft

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