Remove unnecessary SK_SIZE_T_SPECIFIER macro.

This macro was only necessary to support Visual Studio 2013, which did
not yet support %zu format specifiers. Skia no longer compiles on
Visual Studio 2013.

Change-Id: Ie32a66c7a8e022b8596272476ca3547df1f89a55
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/287738
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
4 files changed