[geeklog-hg] [Geeklog-Core/geeklog] b1e6bd: Removed unused imports

[Kenji ITO]

  Branch: refs/heads/master
  Home:   https://github.com/Geeklog-Core/geeklog
  Commit: b1e6bd2aa3f1cc1b2d6a28c43a7cf674e8eaba51
      https://github.com/Geeklog-Core/geeklog/commit/b1e6bd2aa3f1cc1b2d6a28c43a7cf674e8eaba51
  Author: mystralkk <mystralkk at gmail.com>
  Date:   2019-12-21 (Sat, 21 Dec 2019)

  Changed paths:
    M system/classes/Cache.php

  Log Message:
  -----------
  Removed unused imports