Remove outdated comments from the code that created veth

[iiiceoo]

trafficstars

In #7705, the host veth is created directly in the host namespace, rather than being created first in the container namespace.

Signed-off-by: iiiceoo [email protected]

[CLAassistant]

All committers have signed the CLA.

[caseydavenport]

/sem-approve