Cleanup after enabling all slimming paint for all layout tests

LayoutTests/platform/mac/virtual/slimmingpaint/compositing/layers-inside-overflow-scroll-expected.txt

Index: LayoutTests/platform/mac/virtual/slimmingpaint/compositing/layers-inside-overflow-scroll-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/slimmingpaint/compositing/layers-inside-overflow-scroll-expected.txt b/LayoutTests/platform/mac/virtual/slimmingpaint/compositing/layers-inside-overflow-scroll-expected.txt
deleted file mode 100644
index 2b1c8e88703d6fd9c410ef8f92d0e76ed989724f..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac/virtual/slimmingpaint/compositing/layers-inside-overflow-scroll-expected.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-layer at (0,0) size 800x600
-  LayoutView at (0,0) size 800x600
-layer at (0,0) size 800x428
-  LayoutBlockFlow {HTML} at (0,0) size 800x428
-    LayoutBlockFlow {BODY} at (8,16) size 784x402
-      LayoutBlockFlow {P} at (0,0) size 784x18
-        LayoutText {#text} at (0,0) size 445x18
-          text run at (0,0) width 445: "The red box in the overflow:scroll div should be scrolled out of view."
-      LayoutBlockFlow {DIV} at (10,34) size 302x206 [border: (1px solid #000000)]
-        LayoutText {#text} at (0,0) size 0x0
-layer at (19,51) size 300x200
-  LayoutVideo {VIDEO} at (1,1) size 300x200
-layer at (18,266) size 302x152 clip at (19,267) size 285x150 scrollY 100.00 scrollHeight 500
-  LayoutBlockFlow {DIV} at (10,250) size 302x152 [border: (1px solid #000000)]
-    LayoutBlockFlow {DIV} at (1,1) size 285x500
-layer at (19,51) size 300x200
-  LayoutFlexibleBox (relative positioned) {DIV} at (0,0) size 300x200
-    LayoutBlockFlow {DIV} at (0,165) size 300x35
-layer at (19,51) size 300x165
-  LayoutFlexibleBox (relative positioned) {DIV} at (0,0) size 300x165
-layer at (19,167) size 100x100 backgroundClip at (19,267) size 285x150 clip at (19,267) size 285x150 outlineClip at (19,267) size 285x150
-  LayoutBlockFlow {DIV} at (0,0) size 100x100 [bgcolor=#FF0000]