Drop the wait_nodes_ready docstring

The gate stays on by default; the note about turning it off for static/quic
no longer describes the behavior now that ping keepalive holds the mesh.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: radiken

src/deployments/experiments/libp2p/nimlibp2p.py

@@ -47,8 +47,6 @@ class ExpConfig(BaseModel):
     network_jitter: NonNegativeInt = 0
     node_start_delay: NonNegativeInt = 60
     wait_nodes_ready: bool = True
-    """Gate publishing on a ready rollout; set False for sparse meshes (static,
-    quic) whose readiness probe flaps and never reaches a stable 100%."""
 
     @model_validator(mode="after")
     def _check_bootstrap_nodes(self):