Remove outdated comment in ClientHandshakeFactory (#158)
Remove outdated comment in ClientHandshakeFactory (#158)

Summary:
The reference is not passed down anymore, so warning about it is moot.

Pull Request resolved: https://github.com/facebookincubator/mvfst/pull/158

Reviewed By: lnicco

Differential Revision: D23542818

Pulled By: yangchi

fbshipit-source-id: f36513f705c11d779635715404c73918a4461d0f

facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst