docs: remove style overflow-x:auto from vue-examples (#2295)
docs: remove style overflow-x:auto from vue-examples (#2295)

Adding `overflow-x: auto;` to the live examples caused weird placements for toooltips/popovers.

This PR removes this style for now, until we can find a better solution to allowing "wide" examples to scroll left/right on small screens.
bootstrap-vue/bootstrap-vue,tmorehouse/bootstrap-vue,tmorehouse/bootstrap-vue,bootstrap-vue/bootstrap-vue