remove LEGACY_SVG code, as no one defines that flag anymore.

Bug: skia:
Change-Id: I99929ac992c0f6fd3b09036b6cf3db74a3e4d16d
Reviewed-on: https://skia-review.googlesource.com/158600
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
1 file changed