Revert of don't create zero length intervals

gm/bug530095.cpp

Index: gm/bug530095.cpp
diff --git a/gm/bug530095.cpp b/gm/bug530095.cpp
index 76f6bc8f2e55f15cb80714ab2f2f02ac94f45548..690da3c9d0ba054b4f2094a522e9bdfffcfed264 100644
--- a/gm/bug530095.cpp
+++ b/gm/bug530095.cpp
@@ -46,16 +46,3 @@
     canvas->translate(4, 4);
     canvas->drawPath(path2, paint);
 }
-
-DEF_SIMPLE_GM(bug591993, canvas, 40, 140) {
-    SkPaint p;
-    p.setColor(SK_ColorRED);
-    p.setAntiAlias(true);
-    p.setStyle(SkPaint::kStroke_Style);
-    p.setStrokeCap(SkPaint::kRound_Cap);
-    p.setStrokeWidth(10);
-    SkScalar intervals[] = { 100, 100 };
-    SkPathEffect* dash = SkDashPathEffect::Create(intervals, SK_ARRAY_COUNT(intervals), 100);
-    p.setPathEffect(dash)->unref();
-    canvas->drawLine(20, 20, 120, 20, p);
-}