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_core/threads/juce_TimeSliceThread.h

@@ -44,7 +44,7 @@ class JUCE_API  TimeSliceClient
 {
 public:
     /** Destructor. */
-    virtual ~TimeSliceClient()   {}
+    virtual ~TimeSliceClient() = default;
 
     /** Called back by a TimeSliceThread.
 
@@ -98,7 +98,7 @@ public:
         should always call stopThread() with a decent timeout before deleting,
         to avoid the thread being forcibly killed (which is a Bad Thing).
     */
-    ~TimeSliceThread();
+    ~TimeSliceThread() override;
 
     //==============================================================================
     /** Adds a client to the list.