Remove virtual/softwarecompositing suite

LayoutTests/virtual/softwarecompositing/video/video-poster-expected.txt

Index: LayoutTests/virtual/softwarecompositing/video/video-poster-expected.txt
diff --git a/LayoutTests/virtual/softwarecompositing/video/video-poster-expected.txt b/LayoutTests/virtual/softwarecompositing/video/video-poster-expected.txt
deleted file mode 100644
index 05caa7dd66aa92b7ac4a983cf6d30a39c34a27a4..0000000000000000000000000000000000000000
--- a/LayoutTests/virtual/softwarecompositing/video/video-poster-expected.txt
+++ /dev/null
@@ -1,49 +0,0 @@
-A <video> should not have a layer until playback begins.
-This test can not be run manually, it requires testRunner.layerTreeAsText.
-
-Case: No src, no poster
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true
-    }
-  ]
-}
-
-
-Case: Displaying poster
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true
-    }
-  ]
-}
-
-
-Case: Displaying movie
-{
-  "bounds": [785, 782],
-  "children": [
-    {
-      "bounds": [785, 782],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "children": [
-        {
-          "position": [8, 8],
-          "bounds": [352, 288]
-        }
-      ]
-    }
-  ]
-}
-
-
-