grass.py: don't use subprocess.PIPE

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@37930 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/init/grass.py

@@ -592,8 +592,7 @@ def start_gui():
     # Check for gui interface
     if grass_gui == "wxpython":
         subprocess.Popen([os.getenv('GRASS_PYTHON'),
-                          gfile("etc", "wxpython", "wxgui.py")],
-                         stdout=subprocess.PIPE)
+                          gfile("etc", "wxpython", "wxgui.py")])
     
 def clear_screen():
     if windows: