Remove backported entry (see part of r1772678 which backports r1426827)

  *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP

     conformance or to only log the found problems. [Stefan Fritsch]

  *) core: Correctly parse an IPv6 literal host specification in an absolute

     URL in the request line. [Stefan Fritsch]

  *) EventOpt MPM

  *) core: Add LogLevelOverride directive that allows to override the