new definition of functions data structure to handle full support to …

…numeric fluents

pddl/logic/base.py

@@ -41,23 +41,6 @@ def __rshift__(self, other: "Formula") -> "Formula":
         return Or(Not(self), other)
 
 
-@cache_hash
-class Number:
-    """Base class for all the numbers."""
-
-    def __init__(self, value: float) -> None:
-        """Init the number object."""
-        self._value = value
-
-    def __hash__(self) -> int:
-        """Compute the hash of the object."""
-        return hash(self._value)
-
-    def __str__(self) -> str:
-        """Get the string representation."""
-        return str(self._value)
-
-
 class BinaryOp(Formula):
     """Binary operator."""