Remove Sky tests that we don't intend to port to the new world

sky/tests/layout/ellipsis-expected.txt

Index: sky/tests/layout/ellipsis-expected.txt
diff --git a/sky/tests/layout/ellipsis-expected.txt b/sky/tests/layout/ellipsis-expected.txt
deleted file mode 100644
index 8ff4f383865d4b2abb512c12195ccf311f212cb6..0000000000000000000000000000000000000000
--- a/sky/tests/layout/ellipsis-expected.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-layer at (0,0) size 800x600
-  RenderView {#document} at (0,0) size 800x600
-    RenderFlexibleBox {sky} at (0,0) size 800x50
-layer at (0,0) size 56x25
-  RenderParagraph {p} at (0,0) size 56x25 [border: (3px solid #FF0000)]
-    RenderText {#text} at (3,3) size 96x19
-      text run at (3,3) width 96: "These lines "
-    RenderInline {p} at (0,0) size 54x19 [border: (3px solid #FF0000)]
-      RenderText {#text} at (98,3) size 54x19
-        text run at (98,3) width 54: "should"
-    RenderText {#text} at (151,3) size 99x19
-      text run at (151,3) width 99: " all ellipsize."
-layer at (0,25) size 56x25
-  RenderParagraph {p} at (0,25) size 56x25 [border: (3px solid #FF0000)]
-    RenderInline {span} at (0,0) size 117x19
-      RenderText {#text} at (3,3) size 117x19
-        text run at (3,3) width 117: "As should this."
-