* Do not register connection_cleanup as cleanup for the conn->pool. In the past

* Do not register connection_cleanup as cleanup for the conn->pool. In the past
  it was needed to register connection_cleanup as a cleanup for the frontend
  connection memory pool (c->pool) to ensure that connection returns into the
  connection pool if the memory pool of the frontend connection memory pool
  gets destroyed / cleared. Now we ensure explicitly the connection returns
  to the connection pool once we finished handling the request.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@603543 13f79535-47bb-0310-9956-ffa450edef68