Clang: Fix aliasing

Task-number: QTCREATORBUG-15888
Change-Id: I0f2e28e9e0da53481c03707ab0a9abf728c7419f
Reviewed-by: hjk <hjk@theqtcompany.com>
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/libs/clangbackendipc/codecompletionchunk.h

@@ -77,9 +77,6 @@ public:
     const Utf8String &text() const;
     bool isOptional() const;
 
-private:
-    quint8 &kindAsInt();
-
 private:
     Utf8String text_;
     Kind kind_ = Invalid;