QDate/TimeEdit: fix qdoc warnings

Warnings caused by c3e1ab:
../widgets/qdatetimeedit.h:208: No documentation for 'QTimeEdit::time'
../widgets/qdatetimeedit.h:220: No documentation for 'QDateEdit::date'

Both 'date' and 'time' are declared and documented in QDateTimeEdit.

Change-Id: I287b5f20568e4055e6922eb1a70aeedf220de823
Reviewed-by: Shawn Rutledge <shawn.rutledge@nokia.com>
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>

src/widgets/widgets/qdatetimeedit.cpp

@@ -1562,6 +1562,12 @@ QTimeEdit::QTimeEdit(const QTime &time, QWidget *parent)
 {
 }
 
+/*!
+  \property QTimeEdit::time
+  \internal
+  \sa QDateTimeEdit::time
+*/
+
 /*!
   \fn void QTimeEdit::userTimeChanged(const QTime &time)
 
@@ -1626,6 +1632,12 @@ QDateEdit::QDateEdit(const QDate &date, QWidget *parent)
 {
 }
 
+/*!
+  \property QDateEdit::date
+  \internal
+  \sa QDateTimeEdit::date
+*/
+
 /*!
   \fn void QDateEdit::userDateChanged(const QDate &date)