Windows: Fix SSL failures on windows with AcceptFilter https none.

The now-stray apr_socket_opt_set(APR_SO_NONBLOCK=On) call was 
originally added with r327872.  The call was harmless on Unix
due to APR's use of non-blocking sockets when implementing timeouts
on that platform, but harmful on Windows since it collided with
APR's different implementation of timeouts on that platform.

PR: 52476

Submitted by: trawick
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1373108 13f79535-47bb-0310-9956-ffa450edef68