upgrade to JUCE 5.4.3. Remove (probably) unused JUCE modules. Remove VST2 target (it's been end-of-life'd by Steinberg and by JUCE)

modules/juce_gui_extra/misc/juce_KeyMappingEditorComponent.cpp

@@ -345,7 +345,7 @@ public:
         owner.getMappings().addChangeListener (this);
     }
 
-    ~TopLevelItem()
+    ~TopLevelItem() override
     {
         owner.getMappings().removeChangeListener (this);
     }