RadialSymmetryDiagram.py: remove trivial __init__ method

When the __init__ method just calls the parent __init__ method without
doing anything else, it is not strictly needed.

diff --git a/RadialSymmetryDiagram.py b/RadialSymmetryDiagram.py
index e6bc383..a54c1bb 100755 (executable)
--- a/RadialSymmetryDiagram.py
+++ b/RadialSymmetryDiagram.py
@@ -43,9 +43,6 @@ class RadialSymmetryModel():
 
 class RadialSymmetryDiagram(Diagram.Diagram):
 
-    def __init__(self, width, height, background=[1, 1, 1]):
-        Diagram.Diagram.__init__(self, width, height, background)
-
     def draw(self, model):
         cx = self.width / 2.0
         cy = self.height / 2.0