Don't enable midiSeq and filter internal plugins, needs work

source/backend/plugin/NativePlugin.cpp

@@ -28,12 +28,12 @@ void carla_register_all_plugins()
     // Simple plugins
     carla_register_native_plugin_bypass();
     carla_register_native_plugin_lfo();
-    carla_register_native_plugin_midiSequencer();
+    //carla_register_native_plugin_midiSequencer(); // unfinished
     carla_register_native_plugin_midiSplit();
     carla_register_native_plugin_midiThrough();
     carla_register_native_plugin_midiTranspose();
 #ifndef CARLA_OS_WIN
-    carla_register_native_plugin_nekofilter();
+    //carla_register_native_plugin_nekofilter(); // needs UI stuff
 #endif
 
 #ifdef WANT_AUDIOFILE