Add some doctest cleanups for turtle and configparser (#125288)

Co-authored-by: Adam Turner <[email protected]>

Author: AlexWaygood

Doc/library/configparser.rst

@@ -54,6 +54,7 @@ can be customized by end users easily.
 
    import os
    os.remove("example.ini")
+   os.remove("override.ini")
 
 
 Quick Start

Doc/library/turtle.rst

@@ -14,6 +14,11 @@
    from turtle import *
    turtle = Turtle()
 
+.. testcleanup::
+
+   import os
+   os.remove("my_drawing.ps")
+
 --------------
 
 Introduction