Revert of Batch multiple single NVPR draw paths to instanced draws (patchset #5 id:80001 of https://codereview.chromium.org/1908433002/ )

Reason for revert:
This causes what looks like significantly wrong results. Here is an example:

https://gold.skia.org/diff?test=stroke-fill&left=cb47dc2cabbad7d146aedaac199ebace&top=2c6e65d597c574e3bb170a19ca9634c6

Original issue's description:
> Batch multiple single NVPR draw paths to instanced draws
>
> Batch multiple single NVPR draw paths to instanced draws.
> A draw path batch can be combined to other batch if the
> batches do not overlap and have same draw characteristics.
>
> Join the batches in linked list and flatten the list to a
> path list during draw time.
>
> Replace GrPathRendering::drawPath with GrPathRendering::drawPaths.
>
> Perf changes ARM, Shield TV device, Tegra X1 GPU:
>                 desk_chalkboard.skp_1	21.5ms -> 17.8ms	0.83x
>                     desk_mapsvg.skp_1	7.49ms -> 6.18ms	0.82x
> Others results are more volatile.
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1908433002
>
> Committed: https://skia.googlesource.com/skia/+/3c33c389e9f8d14d86756ea1ddeba2097f31ad22

TBR=joshualitt@chromium.org,bsalomon@google.com,kkinnunen@nvidia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1919843002

1 files changed, 0 insertions, 12 deletions

diff --git a/src/gpu/GrPath.h b/src/gpu/GrPath.h
index 975dad0afd..4cb12f4325 100644
--- a/src/gpu/GrPath.h
+++ b/src/gpu/GrPath.h
@@ -36,18 +36,6 @@ public:
     const SkRect& getBounds() const { return fBounds; }
 
     GrPathRendering::FillType getFillType() const { return fFillType; }
-
-    /**
-     * Returns true if a path can be drawn in the same draw paths operation as the other
-     * path. Should return true only when the condition holds transitively with all other paths in
-     * the same group.
-     * E.g.
-     * canCombineDrawPathBatchWith(a) AND canCombineDrawPathBatchWith(b)
-     * canCombineDrawPathBatchWith(a) AND canCombineDrawPathBatchWith(c)
-     *  implies
-     * canCombineDrawPathBatchWith(b) AND canCombineDrawPathBatchWith(c)
-     */
-    virtual bool canCombineDrawPathBatchWith(const GrPath& other) const = 0;
 #ifdef SK_DEBUG
     bool isEqualTo(const SkPath& path, const GrStrokeInfo& stroke) const;
 #endif