"To eliminate the noise" means to get rid of anything that is causing distractions or interference, so that you can focus better or have clarity in a particular situation. Full definition
The way the resort is laid out gives guests a feeling of privacy and eliminates noise from neighbors. (ordinarytraveler.com)
Let's work a little harder to eliminate the noise in figures so we can grasp the fact that the economic road in front of us will remain long and hard. (fortune.com)
Create the best sleeping environment by eliminating noises, electronics and lights in the bedroom. (philmaffetone.com)