remove deprecated SkWriter32::size()

Change-Id: I06d4cbbb88795f0e4b6c275bb40dfad3763406d7
Reviewed-on: https://skia-review.googlesource.com/c/159484
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed