Remove out of date example for fsum()

Doc/library/math.rst

@@ -108,12 +108,7 @@ Number-theoretic and representation functions
 .. function:: fsum(iterable)
 
    Return an accurate floating point sum of values in the iterable.  Avoids
-   loss of precision by tracking multiple intermediate partial sums:
-
-        >>> sum([.1, .1, .1, .1, .1, .1, .1, .1, .1, .1])
-        0.9999999999999999
-        >>> fsum([.1, .1, .1, .1, .1, .1, .1, .1, .1, .1])
-        1.0
+   loss of precision by tracking multiple intermediate partial sums.
 
    The algorithm's accuracy depends on IEEE-754 arithmetic guarantees and the
    typical case where the rounding mode is half-even.  On some non-Windows