Removed shebangs and exe bits on turtledemo scripts.

The setting was inappropriate for '__main__' and inconsistent across the other modules. The scripts can still be executed directly by invoking with the desired interpreter.

Lib/turtledemo/__main__.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 """
   ----------------------------------------------
       turtleDemo - Help

Lib/turtledemo/bytedesign.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """      turtle-example-suite:
 
         tdemo_bytedesign.py

Lib/turtledemo/clock.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: cp1252 -*-
 """       turtle-example-suite:
 

Lib/turtledemo/forest.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """     turtlegraphics-example-suite:
 
              tdemo_forest.py

Lib/turtledemo/fractalcurves.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """      turtle-example-suite:
 
         tdemo_fractalCurves.py

Lib/turtledemo/lindenmayer.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
         xtx_lindenmayer_indian.py

Lib/turtledemo/minimal_hanoi.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
          tdemo_minimal_hanoi.py

Lib/turtledemo/paint.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
             tdemo_paint.py

Lib/turtledemo/peace.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
               tdemo_peace.py

Lib/turtledemo/penrose.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       xturtle-example-suite:
 
           xtx_kites_and_darts.py

Lib/turtledemo/planet_and_moon.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
         tdemo_planets_and_moon.py

Lib/turtledemo/sorting_animate.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """
 
          sorting_animation.py

Lib/turtledemo/tree.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """      turtle-example-suite:
 
              tdemo_tree.py

Lib/turtledemo/yinyang.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
             tdemo_yinyang.py