Revert "[skottie] skottie_tool updates"

This reverts commit 6499e7fb4c6d05afdce3172e3d7ef39018700ae9.

Reason for revert: G3 roll

Original change's description:
> [skottie] skottie_tool updates
> 
> 1) plumb a precomp interceptor to support nested animations, following
>    the same naming pattern as viewer and dm
> 
> 2) clear background with white instead of transparent, to match other
>    tools
> 
> TBR=
> Change-Id: Ic1d1f8c6493a3ca98a9b75f5e2aa2230a46f54d9
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298139
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Florin Malita <fmalita@google.com>

TBR=fmalita@chromium.org,fmalita@google.com

Change-Id: Ibd320e9f7f30004e80ff4d2b2012a18703910842
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298337
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
1 file changed