APMCameraComponent.cc: disable summary.qml until parameters are updated:

Current Parameters it references are outdated, and gimbal control is changing
right now in QGC so it is better to disable it for the moment

src/AutoPilotPlugins/APM/APMCameraComponent.cc

@@ -62,5 +62,5 @@ QUrl APMCameraComponent::setupSource(void) const
 
 QUrl APMCameraComponent::summaryQmlSource(void) const
 {
-    return QUrl::fromUserInput(QStringLiteral("qrc:/qml/APMCameraComponentSummary.qml"));
+    return QUrl();
 }