Revert of batch merge new edges (patchset #1 id:1 of https://codereview.chromium.org/1647223002/ )
Revert of batch merge new edges (patchset #1 id:1 of https://codereview.chromium.org/1647223002/ )

Reason for revert:
Breaks the roll.

Original issue's description:
> batch merge new edges
>
> Find where newly introduced edges go in the edge list once,
> then stitch all of them into the edge list.
>
> R=reed@google.com
> BUG=573166
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1647223002
>
> Committed: https://skia.googlesource.com/skia/+/ae658e15477df86d1a864feb48d0274af2784f40

TBR=reed@google.com,caryclark@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=573166

Review URL: https://codereview.chromium.org/1654593002

rubenvb/skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,google/skia,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,google/skia,Hikari-no-Tenshi/android_external_skia,google/skia,rubenvb/skia,qrealka/skia-hc,qrealka/skia-hc,qrealka/skia-hc,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,qrealka/skia-hc,qrealka/skia-hc,google/skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,HalCanary/skia-hc,rubenvb/skia,tmpvar/skia.cc,HalCanary/skia-hc,google/skia,qrealka/skia-hc,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,rubenvb/skia,qrealka/skia-hc,HalCanary/skia-hc,tmpvar/skia.cc,aosp-mirror/platform_external_skia,tmpvar/skia.cc,HalCanary/skia-hc,qrealka/skia-hc,HalCanary/skia-hc,rubenvb/skia,google/skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,google/skia,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,google/skia,rubenvb/skia,HalCanary/skia-hc,tmpvar/skia.cc,rubenvb/skia,aosp-mirror/platform_external_skia,rubenvb/skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,HalCanary/skia-hc,HalCanary/skia-hc