Removes the foreign key constraint with the given name.

        :param name: The constraint name
        :type name: str

def remove_foreign_key(self, name):
        """
        Removes the foreign key constraint with the given name.

        :param name: The constraint name
        :type name: str
        """
        name = self._normalize_identifier(name)

        if not self.has_foreign_key(name):
            raise ForeignKeyDoesNotExist(name, self._name)

        del self._fk_constraints[name]