Update params.py

Author: Josme

rosapi/src/rosapi/params.py

@@ -39,7 +39,7 @@
 from rcl_interfaces.srv import GetParameters, ListParameters, SetParameters
 from rclpy.callback_groups import MutuallyExclusiveCallbackGroup
 from rclpy.node import Node
-from rclpy.parameter import Parameter
+from rclpy.parameter import get_parameter_value
 from rclpy.task import Future
 from ros2node.api import get_absolute_node_name
 from rosapi.async_helper import futures_wait_for