Revert "doc: link to adding_lsif_to_many_repos.md from another page (…
Created by: beyang
…#14221)"
This reverts commit df424915a3e48f82f1ba3991b372ff940830c29d.
Created by: beyang
…#14221)"
This reverts commit df424915a3e48f82f1ba3991b372ff940830c29d.