Migrate svg layout tests to use slimming paint by default

LayoutTests/virtual/slimmingpaint/svg/repaint/paintorder-filtered-expected.txt

Index: LayoutTests/virtual/slimmingpaint/svg/repaint/paintorder-filtered-expected.txt
diff --git a/LayoutTests/virtual/slimmingpaint/svg/repaint/paintorder-filtered-expected.txt b/LayoutTests/virtual/slimmingpaint/svg/repaint/paintorder-filtered-expected.txt
deleted file mode 100644
index 545933f81cefedab74654ed9904553ab80827f20..0000000000000000000000000000000000000000
--- a/LayoutTests/virtual/slimmingpaint/svg/repaint/paintorder-filtered-expected.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "repaintRects": [
-        [456, 166, 133, 132],
-        [454, 163, 137, 137],
-        [320, 166, 133, 132],
-        [318, 163, 137, 137],
-        [184, 166, 132, 132],
-        [184, 166, 132, 132],
-        [181, 163, 138, 137],
-        [137, 37, 580, 563],
-        [47, 166, 133, 132],
-        [47, 166, 133, 132],
-        [46, 28, 7, 7],
-        [45, 163, 137, 137]
-      ],
-      "paintInvalidationClients": [
-        "LayoutSVGEllipse circle id='t4'",
-        "LayoutSVGPath polygon",
-        "LayoutSVGContainer use id='t1'",
-        "LayoutSVGViewportContainer svg id='poly'",
-        "LayoutSVGPath polygon",
-        "LayoutSVGContainer use id='t2'",
-        "LayoutSVGViewportContainer svg id='poly'",
-        "LayoutSVGPath polygon",
-        "LayoutSVGViewportContainer svg",
-        "LayoutSVGPath polygon id='t3'",
-        "LayoutSVGContainer use",
-        "LayoutSVGPath polygon"
-      ]
-    }
-  ]
-}
-