remove duplicate method.

phasecalculator/classes/phase.py

@@ -141,16 +141,6 @@ class Phase(object):
             phase_element.append(molecule.write_to_xml())
         phase_element.append(self.temperature.write_to_xml())
         return phase_element
-    def get_ssip_locations(self):
-        """Get list of SSIP file locations required for phase.
-
-        Returns
-        -------
-        list
-            list of SSIP File locations.
-
-        """
-        return [molecule.ssip_file_loc for molecule in self.molecule_list]
     def get_molefractions_by_molecule(self):
         """Get the molefractions of all molecules in the phase, labelled by name.