Let's revert this until we have decided in #22345 what to do exactly
about it. We will still introduce an overload of TLS.apply that works
without specifying a `verifySession` function.
This reverts commit 021829e21e.
Conflicts:
project/MiMa.scala
* Remove manual hostname verifier support, used to be included only because Java 6 #21854
* Remove manual hostname verifier support, used to be included only because Java 6 #21854
Do all (Akka)SSLConfig magic in one place directly in the TLS API.
Also, introduce new low-level entrypoint in TLS that allows to specify
an SSLEngine constructor directly without relying on SSLContext. This
allows users to use third-party SSLEngine implementations like netty's
OpenSslEngine together with akka-stream.
