Doc: remove \instantiates commands

These QML types do not instantiate C++ classes.

Change-Id: Idd43012b5bf7c5d8d032befbaa1417329e014d8a
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

src/imports/winextras/JumpDestination.qml

@@ -43,7 +43,6 @@ import QtWinExtras 1.0
 
 /*!
     \qmltype JumpDestination
-    \instantiates QQuickJumpListItem
     \inqmlmodule QtWinExtras
 
     \brief Represents a file, which can be edited or viewed by application.

src/imports/winextras/JumpLink.qml

@@ -43,7 +43,6 @@ import QtWinExtras 1.0
 
 /*!
     \qmltype JumpLink
-    \instantiates QQuickJumpListItem
     \inqmlmodule QtWinExtras
 
     \brief Represents a command to a application.

src/imports/winextras/JumpListSeparator.qml

@@ -43,10 +43,10 @@ import QtWinExtras 1.0
 
 /*!
     \qmltype JumpListSeparator
-    \instantiates QQuickJumpListItem
     \inqmlmodule QtWinExtras
 
     \brief Represents a task list separator.
+
  */
 
 JumpListItem {