wxNviz: update List of classes

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@48609 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/nviz_mapdisp.py

@@ -8,7 +8,6 @@ This module implements 3D visualization mode for map display.
 List of classes:
  - NvizThread
  - GLWindow
- - DragShape
 
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