It is no longer possible to compile the server without SSL
support. Also, going forward in 8.0, we only support OpenSSL.

Hence it makes no sense for tests to skip if SSL support is not
present or to try and determine if we are running with OpenSSL or not.

This patch removes the relevant include files (have_ssl.inc,
have_openssl.inc, not_openssl.inc) from the source and adjusts the
tests as necessary.

Change-Id: I89ee3e891b3818414400f06a6314004bfd0efb87