Fix unittests

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

Index: LayoutTests/platform/mac/virtual/softwarecompositing/backing/no-backing-for-clip-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/softwarecompositing/backing/no-backing-for-clip-expected.txt b/LayoutTests/platform/mac/virtual/softwarecompositing/backing/no-backing-for-clip-expected.txt
deleted file mode 100644
index eebad8a2df1b7a35516889326dd4b58262f1cae9..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac/virtual/softwarecompositing/backing/no-backing-for-clip-expected.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-This layer should not have backing store.
-This layer should not have backing store.
-(GraphicsLayer
-  (bounds 800.00 600.00)
-  (children 1
-    (GraphicsLayer
-      (bounds 800.00 600.00)
-      (contentsOpaque 1)
-      (drawsContent 1)
-      (children 1
-        (GraphicsLayer
-          (position 8.00 8.00)
-          (bounds 342.00 240.00)
-          (children 1
-            (GraphicsLayer
-              (position 1.00 1.00)
-              (bounds 340.00 238.00)
-              (children 1
-                (GraphicsLayer
-                  (position 20.00 38.00)
-                  (bounds 320.00 180.00)
-                  (children 1
-                    (GraphicsLayer
-                      (position 1.00 1.00)
-                      (bounds 340.00 178.00)
-                      (children 1
-                        (GraphicsLayer
-                          (position 30.00 48.00)
-                          (bounds 100.00 100.00)
-                          (contentsOpaque 1)
-                          (drawsContent 1)
-                          (backgroundColor #C0C0C0)
-                        )
-                      )
-                    )
-                  )
-                )
-              )
-            )
-          )
-        )
-      )
-    )
-  )
-)
-