TST: remove a failing doctest for poly1d.

The failure only occurs on Windows and Python 2.5, there the printing of
floating point numbers is slightly different. Since this is a doctest and can
not be marked conditionally as knownfail, just removing it is simplest. It's
not a bug anyway.

numpy/lib/tests/test_polynomial.py

@@ -17,9 +17,6 @@
 >>> print(poly1d([1.89999+2j, -3j, -5.12345678, 2+1j]))
             3      2
 (1.9 + 2j) x - 3j x - 5.123 x + (2 + 1j)
->>> print(poly1d([100e-90, 1.234567e-9j+3, -1234.999e8]))
-       2
-1e-88 x + (3 + 1.235e-09j) x - 1.235e+11
 >>> print(poly1d([-3, -2, -1]))
     2
 -3 x - 2 x - 1