To be clear, this is just a warning. Your existing code should still function properly. Deprecated functions are not removed until the next major version, so you have until Vizard 6 to update your code.
If you would like to simply disable the warnings, then add the following code to the beginning of your script. However, I would strongly recommend that you just update your code.
Code:
import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning)