Update client diversity warnings

[CarlBeek]

According to clientdiversity.org, the warnings provided for some of the clients are now outdated, specifically:

• geth is now below 66%
• Lighthouse is now below 33%
• Nethermind is now above 33%

We have two options on how to proceed, either we just update the warnings to reflect the latest client distributions, or we remove them all together. Personally given the lack of precision in the precise distribution, I am ok removing the warnings for Lighthouse & Prysm, as they are within error margins of being < 33%. The geth warning I could go either way on as they are still the dominant client by far.