Delete move constructor and move-assignment for QEvent

As of 19f9b0d5f5 we define a protected copy
constructor and assignment operator. Static analyzers warn about missing
move variants, so delete those in addition.

Pick-to: 6.0 6.0.0
Change-Id: I28c1a2afd4560ce35a258bde507dafd93245b75b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/kernel/qcoreevent.h

@@ -49,7 +49,9 @@ QT_BEGIN_NAMESPACE
 #define Q_EVENT_DISABLE_COPY(Class) \
 protected: \
     Class(const Class &) = default; \
-    Class &operator=(const Class &other) = default
+    Class(Class &&) = delete; \
+    Class &operator=(const Class &other) = default; \
+    Class &operator=(Class &&) = delete
 
 class QEventPrivate;
 class Q_CORE_EXPORT QEvent           // event base class