Revert "Optimize trivial per-edge aa rect tessellation"

This reverts commit b336c39e076e7ecfe440556950b124cd751db9d7.

Reason for revert: Suspected of breaking Chrome roll

Original change's description:
> Optimize trivial per-edge aa rect tessellation
> 
> Bug: skia:
> Change-Id: I380b443216b238e13bfff7ed13526dda1380ef99
> Reviewed-on: https://skia-review.googlesource.com/c/171723
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Michael Ludwig <michaelludwig@google.com>

TBR=bsalomon@google.com,brianosman@google.com,michaelludwig@google.com

Change-Id: I2b229efc78c2c091b2fa620e22fd5b260dcfc1d7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/c/172871
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
5 files changed