Enable slimming paint for fast/repaint

LayoutTests/platform/linux/virtual/slimmingpaint/fast/repaint/positioned-document-element-expected.txt

Index: LayoutTests/platform/linux/virtual/slimmingpaint/fast/repaint/positioned-document-element-expected.txt
diff --git a/LayoutTests/platform/linux/virtual/slimmingpaint/fast/repaint/positioned-document-element-expected.txt b/LayoutTests/platform/linux/virtual/slimmingpaint/fast/repaint/positioned-document-element-expected.txt
deleted file mode 100644
index c469a7590d6a6642dbb28f09c7deb75e2eb018e0..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/linux/virtual/slimmingpaint/fast/repaint/positioned-document-element-expected.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "backgroundColor": "#008000",
-      "repaintRects": [
-        [108, 116, 403, 20],
-        [108, 116, 403, 20],
-        [108, 116, 403, 19],
-        [100, 100, 419, 52],
-        [8, 16, 784, 20],
-        [8, 16, 784, 20],
-        [8, 16, 403, 19],
-        [0, 0, 800, 600],
-        [0, 0, 800, 52]
-      ],
-      "paintInvalidationClients": [
-        "RootInlineBox",
-        "InlineTextBox 'Tests that the entire viewport is painted with a floated html element.'",
-        "LayoutView #document",
-        "LayoutBlockFlow (positioned) HTML class='changed'",
-        "LayoutBlockFlow BODY",
-        "LayoutBlockFlow P",
-        "LayoutText #text",
-        "InlineTextBox 'Tests that the entire viewport is painted with a floated html element.'"
-      ]
-    }
-  ]
-}
-