Revert of Dependencies are now added between the drawTargets in GrPipeline (patchset #5 id:100001 of https://codereview.chromium.org/1414903002/ )

Reason for revert:
this may have broken the TSAN and ASAN bots

Original issue's description:
> Dependencies are now added between the drawTargets in GrPipeline
>
> This CL relies on https://codereview.chromium.org/1414773002/ (Add the machinery to GrDrawTarget to enable topological sorting)
>
> BUG=skia:4094
>
> Committed: https://skia.googlesource.com/skia/+/45a1c34f607a970933e5cd05e1df6cd8090db1be

TBR=bsalomon@google.com,robertphillips@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:4094

Review URL: https://codereview.chromium.org/1419613005
6 files changed