Disagree, IME that's the worst thing to do. The advice I got from an audiologist was to concentrate on it, and listen to it, and eventually your brain reaches a point where it tunes it out automatically.
For me this has worked, and it is so much better than it used to be to the point that I can now ignore it.
I always wanted to tune it, so that it was a specific pitch and useful for tuning. Never happened though 😆