Remove fadeIn chart animation
Remove fadeIn chart animation

It used to make sense in the past when the chart loaded in a single step. But now there's an in-between loading state where the chart config is loaded and titles shown, but the data is still loading.

The full chart frame was fading in on the last step, when data was loaded, but this doesn't make sense in this context.

OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher