Removes extra `list-style` and `outline` merging.
Removes extra `list-style` and `outline` merging.

jakubpawlowicz/clean-css,island205/clean-css,yomed/clean-css,webconnex/clean-css,GerHobbelt/clean-css,MartyIX/clean-css,scottgonzalez/clean-css,shelsonjava/clean-css,stuht/clean-css,vlajos/clean-css