ProjectExplorer: Fix build for MSVC

(Done by Tobias)

Change-Id: If85f64681986cf56f493fa448977a2da248e167d
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/projectnodes.h

@@ -109,6 +109,7 @@ public:
     };
 
     virtual ~Node();
+    Node(const Node &other) = delete;
     NodeType nodeType() const;
     int priority() const;