Remove 'site-lookup' global cache group
|Reported by:||johnjamesjacoby||Owned by:||jeremyfelt|
After a bit of sleuthing around the old WordPressMU codebase, it appears the site-lookup global cache group was never put to use in core.
I pinged @dd32, who confirmed that it also is not used on WordPress.com, and I checked WordPress.org to be certain there's nothing unique happening there either.
I didn't find anything in the plugins repository using it, nor anything on GitHub.
Recommend to remove this global cache group completely from core.