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_basics/native/juce_ios_Windowing.mm

@@ -48,7 +48,8 @@ namespace juce
 }
 
 @property (strong, nonatomic) UIWindow *window;
-- (id)init;
+- (id) init;
+- (void) dealloc;
 - (void) applicationDidFinishLaunching: (UIApplication*) application;
 - (void) applicationWillTerminate: (UIApplication*) application;
 - (void) applicationDidEnterBackground: (UIApplication*) application;
@@ -88,7 +89,7 @@ namespace juce
 
     NSObject* _pushNotificationsDelegate;
 
-- (id)init
+- (id) init
 {
     self = [super init];
     appSuspendTask = UIBackgroundTaskInvalid;
@@ -100,6 +101,11 @@ namespace juce
     return self;
 }
 
+- (void) dealloc
+{
+    [super dealloc];
+}
+
 - (void) applicationDidFinishLaunching: (UIApplication*) application
 {
     ignoreUnused (application);
@@ -640,13 +646,13 @@ int JUCE_CALLTYPE NativeMessageBox::showYesNoBox (AlertWindow::AlertIconType /*i
 }
 
 //==============================================================================
-bool DragAndDropContainer::performExternalDragDropOfFiles (const StringArray&, bool, Component*)
+bool DragAndDropContainer::performExternalDragDropOfFiles (const StringArray&, bool, Component*, std::function<void()>)
 {
     jassertfalse;    // no such thing on iOS!
     return false;
 }
 
-bool DragAndDropContainer::performExternalDragDropOfText (const String&, Component*)
+bool DragAndDropContainer::performExternalDragDropOfText (const String&, Component*, std::function<void()>)
 {
     jassertfalse;    // no such thing on iOS!
     return false;
@@ -730,7 +736,7 @@ Desktop::DisplayOrientation Desktop::getCurrentOrientation() const
     return Orientations::convertToJuce (orientation);
 }
 
-void Desktop::Displays::findDisplays (float masterScale)
+void Displays::findDisplays (float masterScale)
 {
     JUCE_AUTORELEASEPOOL
     {