Turn off onFoo deprecated warning

src/QGCLoggingCategory.cc

@@ -115,6 +115,8 @@ void QGCLoggingCategoryRegister::setFilterRulesFromSettings(const QString& comma
     // Logging from GStreamer library itself controlled by gstreamer debug levels is always turned on
     filterRules += filterRuleFormat.arg("GStreamerAPILog");
 
+    filterRules += "qt.qml.connections=false";
+
     qDebug() << "Filter rules" << filterRules;
     QLoggingCategory::setFilterRules(filterRules);
 }