Remove declaration which causes Qt3Support dependency.

git-svn-id: http://svn.osgeo.org/qgis/trunk@8645 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: telwertowski

src/ui/qgscontinuouscolordialogbase.ui

@@ -123,7 +123,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11" />
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>QgsColorButton</class>