python_pgm_template exit_function fix

It is not correct for exit_function to have arguments since no
arguments are ever passed to it.

Change-Id: I4981e6071927e0ec8cb3337d2487a4bd61857777
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/templates/python_pgm_template b/templates/python_pgm_template
index b7fe32f..fc2cf79 100644
--- a/templates/python_pgm_template
+++ b/templates/python_pgm_template
@@ -29,8 +29,7 @@
 stock_list = [("test_mode", 0), ("quiet", 0), ("debug", 0)]
 
 
-def exit_function(signal_number=0,
-                  frame=None):
+def exit_function():
     r"""
     Execute whenever the program ends normally or with the signals that we catch (i.e. TERM, INT).
     """