I don't see that exact tool, but depending on your specific clip you may find that the Skin Smoother tool or the Dreamy or Gaussian Blur FX help out because they soften the focus. Filters may also help to mask the noise.
You can also use the desktop version to remove the noise then produce it to use in the mobile app, and you may want to let CL know that you'd like to see that functionality be added to the app by going to Settings | FAQ & Send Feedback.