Remove use of deprecated tempfile module in skia.

The lack of 'rmfile' steps is OK because all of the temporary paths
are created within swarming's sandbox; swarming will clean everything
up after the recipe has quit.

R=borenet@google.com

Change-Id: Ibb8dc612ec8eb98fe966c9caa90ba59db48dbfba
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/239797
Auto-Submit: Robbie Iannucci <iannucci@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
53 files changed