CLEANUP: ssl: remove 57 occurrences of useless tests on LIBRESSL_VERSION_NUMBER

They were all check to comply with the advertised openssl version. Now
that libressl doesn't pretend to be a more recent openssl anymore, we
can simply rely on the regular openssl version tests without having to
deal with exceptions for libressl.
diff --git a/src/cli.c b/src/cli.c
index eb93079..fe50d9d 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -1002,7 +1002,7 @@
 			     (fdt.iocb == poller_pipe_io_handler) ? "poller_pipe_io_handler" :
 			     (fdt.iocb == mworker_accept_wrapper) ? "mworker_accept_wrapper" :
 #ifdef USE_OPENSSL
-#if (HA_OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(OPENSSL_NO_ASYNC) && !defined(LIBRESSL_VERSION_NUMBER)
+#if (HA_OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(OPENSSL_NO_ASYNC)
 			     (fdt.iocb == ssl_async_fd_free) ? "ssl_async_fd_free" :
 			     (fdt.iocb == ssl_async_fd_handler) ? "ssl_async_fd_handler" :
 #endif