[Traffic Control] Fully remove client IP param injection

[williampsmith]

Description

This removes the plumbing to get client IP through json rpc requests by injecting into the request param.

Things NOT touched:

1. Did not remove plumbing of the client IP from transaction orchestrator forward. This allows for us to later route client IP through other interfaces such as graphql, which has far bettewr support for such things. This is fine as these fields are all optional and should not change anything
2. We still accept and segment proxied requests in traffic control policies, again, so that other interfaces may forward and everything will work as before.

Test plan

Existing tests

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Release notes

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• [ ] Protocol:
• [ ] Nodes (Validators and Full nodes):
• [ ] Indexer:
• [ ] JSON-RPC:
• [ ] GraphQL:
• [ ] CLI:
• [ ] Rust SDK:

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