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/backend.c b/src/backend.c
index ed3c459..b7894f8 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -1582,8 +1582,7 @@
 	}
 
 
-#if USE_OPENSSL && (defined(OPENSSL_IS_BORINGSSL) || \
-    ((HA_OPENSSL_VERSION_NUMBER >= 0x10101000L) && !defined(LIBRESSL_VERSION_NUMBER)))
+#if USE_OPENSSL && (defined(OPENSSL_IS_BORINGSSL) || (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L))
 
 	if (!reuse && cli_conn && srv &&
 	    (srv->ssl_ctx.options & SRV_SSL_O_EARLY_DATA) &&