"Revert "Added config example for Varnish 4.0"""

This reverts commit 23afdb3b5c2743883767c365757346320a757589.

We thought we had the issue fixed, but apparently not quite yet - see #4280
Merge branch '2.3' into 2.5

* 2.3:
  "Revert "Added config example for Varnish 4.0"""