So I tried two things on this mp3 file:
The first thing I tried was using audacity’s built-in click-removal. I first Normalized the audio, then ran click-removal with the parameters 110, 40.
The second thing I tried was using Paul’s De-clicker nyquist program with the built-in parameters. See: Updated De-Clicker and new De-esser for speech
However, be warned: This plug-in doesn’t like long files.
I had similar results each way. You can also try combining the effects or working with the parameters. Good Luck. 