pythongh-115091: Remove a left-over sentence that refers to Py_OptimizeFlag from ctypes documentation (pythonGH-115092)

Remove a left-over sentence that refers to Py_OptimizeFlag 

Remove a left-over sentence that refers to an example that was present in Python 3.10 and was using ``Py_OptimizeFlag``.

Author: ztane

Doc/library/ctypes.rst

@@ -1117,10 +1117,6 @@ api::
    >>> print(hex(version.value))
    0x30c00a0
 
-If the interpreter would have been started with :option:`-O`, the sample would
-have printed ``c_long(1)``, or ``c_long(2)`` if :option:`-OO` would have been
-specified.
-
 An extended example which also demonstrates the use of pointers accesses the
 :c:data:`PyImport_FrozenModules` pointer exported by Python.