diff --git a/pymatgen/analysis/phase_diagram.py b/pymatgen/analysis/phase_diagram.py
index 319f7015389..ebfab043f09 100644
--- a/pymatgen/analysis/phase_diagram.py
+++ b/pymatgen/analysis/phase_diagram.py
@@ -99,15 +99,6 @@ def as_dict(self):
                 "name": self.name,
                 "attribute": self.attribute}
 
-    def __eq__(self, other):
-        if isinstance(other, self.__class__):
-            return self.as_dict() == other.as_dict()
-        else:
-            return False
-
-    def __hash__(self):
-        return id(self)
-
     @classmethod
     def from_dict(cls, d):
         return cls(Composition(d["composition"]), d["energy"],