removed mapPlanes that can not be wrapped

git-svn-id: http://svn.code.sf.net/p/pythonqt/code/trunk@387 ea8d5007-eb21-0410-b261-ccb3ea6e24a9

Author: florianlink

generator/typesystem_multimedia.xml

@@ -106,4 +106,6 @@
 <object-type name="QGraphicsVideoItem"/>
 <object-type name="QVideoWidget"/>
 
+<rejection class="QAbstractVideoBuffer" function-name="mapPlanes"/>
+
 </typesystem>