rm src/compute

This is a stale, unused, untested snapshot.

Change-Id: I7c78c7c0f1637850724cbe8dcd99223a0ea592d2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209644
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
436 files changed