Revert "ci(travis): force git version"
Revert "ci(travis): force git version"

This reverts commit 7ed3cba1398da183d2a3d86419e210fe3a98dc22.

vue-styleguidist/vue-styleguidist,vue-styleguidist/vue-styleguidist,vue-styleguidist/vue-styleguidist,vue-styleguidist/vue-styleguidist