Remove internal deprecations.

[nemanja-boric-sociomantic]

This PR removes references to deprecated methods in swarm from unittests, so swarm doesn't hit it's own deprecations.

[gavin-norman-sociomantic]

Yeah, I was going to say, why undeprecate it when we can just not call it internally. I see you updated ;)

[nemanja-boric-sociomantic]

Well, the protos still need to call it. However, I forgot that we can do static if on the swarm version inside protos.

[gavin-norman-sociomantic]

The protos need to call it because in older swarm versions it used to do something?

[nemanja-boric-sociomantic]

Yes, in older swarm versions, TCP_NODELAY was not turned on by default and we thought that's too much for a patch release.