Removed obsolete function QUuid::operator QString()

It is a source incompatible change, but I believe it is safe to say that it is
a small change, which doesn't affect many people.

Change-Id: Iad11befe4cca60484cf4e04cd3049c93a4ea5faf
Reviewed-by: Prasanth Ullattil <prasanth.ullattil@nokia.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

dist/changes-5.0.0

@@ -136,6 +136,11 @@ information about a particular change.
   QAbstractEventDispatcher::registeredTimers() will need to be updated to pass
   3 arguments to the TimerInfo constructor (instead of 2).
 
+- QUuid
+
+  * Removed implicit conversion operator QUuid::operator QString(), instead
+  QUuid::toString() function should be used.
+
 ****************************************************************************
 *                           General                                        *
 ****************************************************************************

src/corelib/plugin/quuid.cpp

@@ -439,15 +439,6 @@ QUuid QUuid::fromRfc4122(const QByteArray &bytes)
     otherwise returns false.
 */
 #ifndef QT_NO_QUUID_STRING
-/*!
-    \fn QUuid::operator QString() const
-    \obsolete
-
-    Returns the string representation of the uuid.
-
-    \sa toString()
-*/
-
 /*!
     Returns the string representation of this QUuid. The string is
     formatted as five hex fields separated by '-' and enclosed in

src/corelib/plugin/quuid.h

@@ -108,9 +108,6 @@ struct Q_CORE_EXPORT QUuid
     QUuid(const QString &);
     QUuid(const char *);
     QString toString() const;
-#if QT_DEPRECATED_SINCE(5,0)
-    QT_DEPRECATED operator QString() const { return toString(); }
-#endif
     QUuid(const QByteArray &);
     QByteArray toByteArray() const;
 #endif