Stop installing `hexo-cli` on tests in CircleCI.
Stop installing `hexo-cli` on tests in CircleCI.

The command is already present in `hexo` and will be available through
the new npm scripts (see HEAD~).

Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor