Remove second url of I2M in README.rst for Pypi

README.rst

@@ -16,7 +16,7 @@ of Sciences and `I2M <http://www.i2m.univ-amu.fr>`_, Aix-Marseille Université.
 
 The Python port is developed at
 `LabEx Archimède <http://labex-archimede.univ-amu.fr/>`_, as a
-`LIF <http://www.lif.univ-mrs.fr/>`_ and `I2M <https://www.i2m.univ-amu.fr/>`_
+`LIF <http://www.lif.univ-mrs.fr/>`_ and I2M
 project, Aix-Marseille Université.
 
 This package, as well as the original LTFAT toolbox, is Free software, released