Delete SkAutoTime from jpeg encoder

We use nanobench instead to measure encode performance.

BUG=skia:

Change-Id: I4f0b43b7e09f99967889e941cb6947433033006a
Reviewed-on: https://skia-review.googlesource.com/7640
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
1 file changed