remove legacy code for text attributes on paint

Bug: skia:2664
Change-Id: I09f9d1401410d7ca338d7acde5a9660921c74da9
Reviewed-on: https://skia-review.googlesource.com/c/185460
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
13 files changed