Migrate svg layout tests to use slimming paint by default

LayoutTests/platform/linux/virtual/slimmingpaint/svg/text/text-viewbox-rescale-expected.txt

Index: LayoutTests/platform/linux/virtual/slimmingpaint/svg/text/text-viewbox-rescale-expected.txt
diff --git a/LayoutTests/platform/linux/virtual/slimmingpaint/svg/text/text-viewbox-rescale-expected.txt b/LayoutTests/platform/linux/virtual/slimmingpaint/svg/text/text-viewbox-rescale-expected.txt
deleted file mode 100644
index 4d05d612693f526b2e4089d997eb808123ca1413..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/linux/virtual/slimmingpaint/svg/text/text-viewbox-rescale-expected.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "repaintRects": [
-        [59, 143, 98, 23],
-        [59, 143, 98, 23],
-        [59, 143, 98, 23],
-        [59, 143, 98, 23],
-        [59, 43, 98, 123],
-        [59, 43, 98, 23],
-        [59, 43, 98, 23],
-        [59, 43, 98, 23],
-        [59, 43, 98, 23],
-        [59, 43, 98, 23],
-        [59, 43, 98, 23]
-      ],
-      "paintInvalidationClients": [
-        "RootInlineBox",
-        "InlineTextBox 'PASS '",
-        "InlineFlowBox",
-        "InlineTextBox 'PASS'",
-        "RootInlineBox",
-        "InlineTextBox 'PASS '",
-        "InlineFlowBox",
-        "InlineTextBox 'PASS'",
-        "LayoutSVGRoot (positioned) svg",
-        "LayoutSVGViewportContainer svg id='inner1'",
-        "LayoutSVGText text",
-        "LayoutSVGInlineText #text",
-        "InlineTextBox 'PASS '",
-        "LayoutSVGTSpan tspan",
-        "InlineFlowBox",
-        "LayoutSVGInlineText #text",
-        "InlineTextBox 'PASS'",
-        "LayoutSVGInlineText #text",
-        "LayoutSVGViewportContainer svg id='inner2'",
-        "LayoutSVGText text",
-        "LayoutSVGTSpan tspan",
-        "InlineFlowBox"
-      ]
-    }
-  ]
-}
-