drop port-collision checks against swarm.otel.telemetryPort

nothing at runtime: eval no longer asserts against a port the swarm
collector no longer binds in the host netns.

nix/host-modules/otel.nix

@@ -144,9 +144,7 @@ in
         the value *configured* rather than implied, which is the point of
         the option. An undeclared port is invisible to anything comparing
         ports, so a second collector on the same host picking the same
-        number fails at `bind()` rather than at eval —
-        `services.hyperhive.swarm.otel.telemetryPort` sidesteps 8888 by
-        hand for that reason.
+        number fails at `bind()` rather than at eval.
       '';
     };