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/misc/juce_Uuid.cpp

@@ -145,13 +145,3 @@ uint64 Uuid::hash() const noexcept
 }
 
 } // namespace juce
-
-#if ! DOXYGEN
-namespace std
-{
-    template <> struct hash<juce::Uuid>
-    {
-        size_t operator() (const juce::Uuid& u) const noexcept   { return (size_t) u.hash(); }
-    };
-}
-#endif