Revert "Use redis rank again"
Revert "Use redis rank again"

This reverts commit 4cb5891292dc9bcca1b8498bfd479b49b044e036.

k0kubun/github-ranking,k0kubun/github-ranking,k0kubun/githubranking,k0kubun/githubranking,k0kubun/githubranking,k0kubun/githubranking,k0kubun/github-ranking,k0kubun/github-ranking,k0kubun/githubranking,k0kubun/github-ranking