Remove SQLite support

王权利请求将github/fork/riyad/remove-sqlite合并到master

Created by: riyad

Supporting SQLite makes no sense for GitLab:

  • SQLite shouldn't be used in production (because of mulit-user/multi-process access to DB)
  • Strange race conditions with SQL (e.g. #1262 (closed))
  • Problems with locking

It might be a good idea for starting development, but it shouldn't be supported in production.

合并请求报告