[infra] No task deduplication

Isolates are expiring despite the tasks which generate them being
deduped. Hopefully this is temporary, and we can update the isolate
server to expire based on last usage date rather than creation date.

Change-Id: I7158612cd9b28c80268c54da9af88d2048e6aad1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/226176
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
2 files changed