Fix tests broken by default text color change.

sky/tests/clipping/clipping-transforms-expected.sky

Index: sky/tests/clipping/clipping-transforms-expected.sky
diff --git a/sky/tests/clipping/clipping-transforms-expected.sky b/sky/tests/clipping/clipping-transforms-expected.sky
deleted file mode 100644
index 4ac45d7af6c0c2557dfb82d88662547169456755..0000000000000000000000000000000000000000
--- a/sky/tests/clipping/clipping-transforms-expected.sky
+++ /dev/null
@@ -1,14 +0,0 @@
-<import src="../resources/run-after-display.sky" />
-<img src="http://storage.googleapis.com/mojo/sky-pngs/77c37e9285340992042008792e29c861306cdc9e" />
-<script>
-import "dart:sky";
-import "dart:sky.internals" as internals;
-
-void main() {
-  window.addEventListener('load', (_) {
-    runAfterDisplay(() {
-      internals.notifyTestComplete("");
-    });
-  });
-}
-</script>