Remove virtual/softwarecompositing suite

LayoutTests/virtual/softwarecompositing/backing/no-backing-for-clip-overlap-expected.txt

Index: LayoutTests/virtual/softwarecompositing/backing/no-backing-for-clip-overlap-expected.txt
diff --git a/LayoutTests/virtual/softwarecompositing/backing/no-backing-for-clip-overlap-expected.txt b/LayoutTests/virtual/softwarecompositing/backing/no-backing-for-clip-overlap-expected.txt
deleted file mode 100644
index 599579bb0dea4ea3bc8a02ff90c9a7bc77a21736..0000000000000000000000000000000000000000
--- a/LayoutTests/virtual/softwarecompositing/backing/no-backing-for-clip-overlap-expected.txt
+++ /dev/null
@@ -1,54 +0,0 @@
-This layer should not have backing store.
-This layer should have backing store.
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "children": [
-        {
-          "position": [8, 8],
-          "bounds": [342, 180],
-          "children": [
-            {
-              "position": [1, 1],
-              "bounds": [340, 178],
-              "children": [
-                {
-                  "position": [30, 48],
-                  "bounds": [100, 100],
-                  "contentsOpaque": true,
-                  "drawsContent": true,
-                  "backgroundColor": "#C0C0C0"
-                }
-              ]
-            }
-          ]
-        },
-        {
-          "position": [8, 178],
-          "bounds": [342, 180],
-          "drawsContent": true,
-          "children": [
-            {
-              "position": [1, 1],
-              "bounds": [340, 178],
-              "children": [
-                {
-                  "position": [30, 48],
-                  "bounds": [100, 100],
-                  "contentsOpaque": true,
-                  "drawsContent": true,
-                  "backgroundColor": "#C0C0C0"
-                }
-              ]
-            }
-          ]
-        }
-      ]
-    }
-  ]
-}
-