qmake: remove pointless ~VCConfiguration()

It's empty, but non-trivial, thus preventing move special member
functions from being generated by the compiler (now that qmake
is compiled as C++11, too).

Change-Id: I7e4b6d7f604020dd5e6da81f7a046202c8b78e09
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

qmake/generators/win32/msvc_objectmodel.h

@@ -860,7 +860,6 @@ class VCConfiguration
 public:
     // Functions
     VCConfiguration();
-    ~VCConfiguration(){}
 
     bool                    suppressUnknownOptionWarnings;
     DotNET                  CompilerVersion;