Remove unnecessary dunder methods from Variable

Author: ricardoV94

pytensor/graph/basic.py

@@ -553,26 +553,6 @@ def clone(self, **kwargs):
         cp.tag = copy(self.tag)
         return cp
 
-    def __lt__(self, other):
-        raise NotImplementedError(
-            "Subclasses of Variable must provide __lt__", self.__class__.__name__
-        )
-
-    def __le__(self, other):
-        raise NotImplementedError(
-            "Subclasses of Variable must provide __le__", self.__class__.__name__
-        )
-
-    def __gt__(self, other):
-        raise NotImplementedError(
-            "Subclasses of Variable must provide __gt__", self.__class__.__name__
-        )
-
-    def __ge__(self, other):
-        raise NotImplementedError(
-            "Subclasses of Variable must provide __ge__", self.__class__.__name__
-        )
-
     def get_parents(self):
         if self.owner is not None:
             return [self.owner]