Hiding SSL / SMTP option when building without SSL support

The SMTP server always uses unencrypted connections in this case so showing the check box is misleading

src/gui/optionsdlg.cpp

@@ -149,6 +149,7 @@ OptionsDialog::OptionsDialog(QWidget *parent)
 
 #if defined(QT_NO_OPENSSL)
     m_ui->checkWebUiHttps->setVisible(false);
+    m_ui->checkSmtpSSL->setVisible(false);
 #endif
 
 #ifndef Q_OS_WIN