[Merge] ~mitya57/compiz:typo into compiz:master

[Dmitry Shachnev]

The proposal to merge ~mitya57/compiz:typo into compiz:master has been updated.

Description changed to:

Remove unused empty private structs.

For more details, see:
https://code.launchpad.net/~mitya57/compiz/+git/compiz/+merge/390763
-- 
Your team Compiz Maintainers is requested to review the proposed merge of ~mitya57/compiz:typo into compiz:master.