Delete the current scope in the current scope.

def pop_scope(self):
        """Delete the current scope in the current scope."""
        child_scope = self.stack.current.current.copy()
        self.stack.current.pop()
        parent_scope = self.stack.current.current.copy()
        self.stack.current.current = {
            key: child_scope[key] for key in child_scope if key in parent_scope
        }