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

sky/tests/layout/document-elementFromPoint-absolute-position.sky

Index: sky/tests/layout/document-elementFromPoint-absolute-position.sky
diff --git a/sky/tests/layout/document-elementFromPoint-absolute-position.sky b/sky/tests/layout/document-elementFromPoint-absolute-position.sky
deleted file mode 100644
index 745efbcbf0e7bdf88bf1293c12e7bc16b651f2bd..0000000000000000000000000000000000000000
--- a/sky/tests/layout/document-elementFromPoint-absolute-position.sky
+++ /dev/null
@@ -1,92 +0,0 @@
-<style>
-postive-z-above,
-postive-z-below,
-zero-z-above,
-zero-z-below,
-no-z-above,
-no-z-below,
-postive-z-after {
-  position: absolute;
-  display: flex;
-  left: 0;
-  right: 0;
-  top: 0;
-  bottom: 0;
-  background-color: blue;
-}
-
-no-z-below {
-  top: 50px;
-  background-color: green;
-}
-zero-z-above {
-  z-index: 0;
-  top: 100px;
-  background-color: red;
-}
-zero-z-below {
-  z-index: 0;
-  top: 150px;
-  background-color: salmon;
-}
-postive-z-above {
-  z-index: 1;
-  top: 200px;
-  background-color: yellow;
-}
-postive-z-below {
-  z-index: 1;
-  top: 250px;
-  background-color: pink;
-}
-postive-z-after {
-  z-index: 1;
-  top: 300px;
-  background-color: orange;
-}
-</style>
-<postive-z-above layer yellow></postive-z-above>
-<postive-z-below layer pink></postive-z-below>
-<no-z-above no-layer blue></no-z-above>
-<no-z-below no-layer green></no-z-below>
-<zero-z-above layer red></zero-z-above>
-<zero-z-below layer salmon></zero-z-below>
-<postive-z-after layer orange></postive-z-after>
-<script>
-import "../resources/third_party/unittest/unittest.dart";
-import "../resources/unit.dart";
-
-import "dart:sky";
-
-void main() {
-  initUnit();
-
-  test("should hit test top item", () {
-    expect(document.elementFromPoint(100, 25).tagName, equals('no-z-above'));
-  });
-
-  test("should hit test second", () {
-    expect(document.elementFromPoint(100, 75).tagName, equals('no-z-below'));
-  });
-
-  test("should hit test third", () {
-    expect(document.elementFromPoint(100, 125).tagName, equals('zero-z-above'));
-  });
-
-  test("should hit test fourth", () {
-    expect(document.elementFromPoint(100, 175).tagName, equals('zero-z-below'));
-  });
-
-  test("should hit test fifth", () {
-    expect(document.elementFromPoint(100, 225).tagName, equals('postive-z-above'));
-  });
-
-  test("should hit test sixth", () {
-    expect(document.elementFromPoint(100, 275).tagName, equals('postive-z-below'));
-  });
-
-  test("should hit test seventh", () {
-    expect(document.elementFromPoint(100, 325).tagName, equals('postive-z-after'));
-  });
-}
-</script>