tst_QSslSocket: Remove compile-time #ifdef check

Since we use runtime plugins now and the test doesn't use any
symbols from openssl

Amends 486b1aec16

Pick-to: 6.6 6.5
Change-Id: Ib66d1ca15835c41fe138c7830ce3edd0bdce0d5f
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

tests/auto/network/ssl/qsslsocket/tst_qsslsocket.cpp

@@ -1661,8 +1661,6 @@ void tst_QSslSocket::protocolServerSide()
     QCOMPARE(client.isEncrypted(), works);
 }
 
-#if QT_CONFIG(openssl)
-
 void tst_QSslSocket::serverCipherPreferences()
 {
     if (!isTestingOpenSsl)
@@ -1757,8 +1755,6 @@ void tst_QSslSocket::serverCipherPreferences()
     }
 }
 
-#endif // Feature 'openssl'.
-
 
 void tst_QSslSocket::setCaCertificates()
 {