Remove Stats V3 Code - FluxC

[ThomazFB]

After September 1st the Stats V3 API is no longer available, so should be OK to remove all Stats V3 related code and reduce complexity for all TopEarners classes and operation within the FluxC library

[anitaa1990]

@ThomazFB do you know if this issue is completed or if we need to work on it? If you're not working on it, can you un-assign yourself?

[ThomazFB]

Hey @anitaa1990, thanks for the ping, only the Woo part got removed as this task ended up not getting tackled. I'll un-assign myself. 🙇