Pop a name from the SlabDict.

        Args:
            name (str): The name to remove.
            defval (obj): The default value to return if the name is not present.

        Returns:
            object: The object stored in the SlabDict, or defval if the object was not present.

def pop(self, name, defval=None):
        '''
        Pop a name from the SlabDict.

        Args:
            name (str): The name to remove.
            defval (obj): The default value to return if the name is not present.

        Returns:
            object: The object stored in the SlabDict, or defval if the object was not present.
        '''
        valu = self.info.pop(name, defval)
        lkey = self.pref + name.encode('utf8')
        self.slab.pop(lkey, db=self.db)
        return valu