Remove zh_HK Chinese Traditional Hong Kong 繁體中文 (香港) translation
I think we should remove the 繁體中文（香港）translation. And just relabel the existing 繁體中文（臺灣）to be just 繁體中文.
Having two Traditional Chinese translations is unnecessary. People can just use one. I don’t think there would many terms that would be translated differently for those two translations. Let’s combine them. Another benefit is that the existing Hong Kong translation has very low completion rate. This would help people who use that translation to pick the unified one and benefit from that.