Revert "Add some support for the code-point code-unit distinction."

tests/corelib/surrogate_pair_toUpper_test.dart

Index: tests/corelib/surrogate_pair_toUpper_test.dart
diff --git a/tests/corelib/surrogate_pair_toUpper_test.dart b/tests/corelib/surrogate_pair_toUpper_test.dart
deleted file mode 100644
index 7d50971ab064b77ddf1fd1da94ab3dd4cbdee5a9..0000000000000000000000000000000000000000
--- a/tests/corelib/surrogate_pair_toUpper_test.dart
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-class SurrogatePairTest {
-
-  static testMain() {
-    var monkeyFace = "🐵";
-    var aceOfSpades = "🂡";
-    var gronthismata = "𝁅";
-    var segno = "𝄋";
-
-    Expect.equals(monkeyFace, monkeyFace.toUpperCase());
-    Expect.equals(monkeyFace, monkeyFace.toLowerCase());
-    Expect.equals(aceOfSpades, aceOfSpades.toUpperCase());
-    Expect.equals(aceOfSpades, aceOfSpades.toLowerCase());
-    Expect.equals(gronthismata, gronthismata.toUpperCase());
-    Expect.equals(gronthismata, gronthismata.toLowerCase());
-    Expect.equals(segno, segno.toUpperCase());
-    Expect.equals(segno, segno.toLowerCase());
-
-    var mixedMitt = new String.fromCharCodes([0x10423, 0x1042e, 0x1043b]);
-    var upperMitt = new String.fromCharCodes([0x10423, 0x10406, 0x10413]);
-    var lowerMitt = new String.fromCharCodes([0x1044b, 0x1042e, 0x1043b]);
-    Expect.equals(upperMitt, mixedMitt.toUpperCase());
-    Expect.equals(lowerMitt, mixedMitt.toLowerCase());
-    Expect.equals(upperMitt, upperMitt.toUpperCase());
-    Expect.equals(lowerMitt, upperMitt.toLowerCase());
-    Expect.equals(upperMitt, lowerMitt.toUpperCase());
-    Expect.equals(lowerMitt, lowerMitt.toLowerCase());
-
-    var mixedXMitt = new String.fromCharCodes([0x78, 0x10423, 0x1042e, 0x1043b]);
-    var upperXMitt = new String.fromCharCodes([0X58, 0x10423, 0x10406, 0x10413]);
-    var lowerXMitt = new String.fromCharCodes([0x78, 0x1044b, 0x1042e, 0x1043b]);
-    Expect.equals(upperXMitt, mixedXMitt.toUpperCase());
-    Expect.equals(lowerXMitt, mixedXMitt.toLowerCase());
-    Expect.equals(upperXMitt, upperXMitt.toUpperCase());
-    Expect.equals(lowerXMitt, upperXMitt.toLowerCase());
-    Expect.equals(upperXMitt, lowerXMitt.toUpperCase());
-    Expect.equals(lowerXMitt, lowerXMitt.toLowerCase());
-
-    var mixedDotMitt = new String.fromCharCodes([0x2e, 0x10423, 0x1042e, 0x1043b]);
-    var upperDotMitt = new String.fromCharCodes([0X2e, 0x10423, 0x10406, 0x10413]);
-    var lowerDotMitt = new String.fromCharCodes([0x2e, 0x1044b, 0x1042e, 0x1043b]);
-    Expect.equals(upperDotMitt, mixedDotMitt.toUpperCase());
-    Expect.equals(lowerDotMitt, mixedDotMitt.toLowerCase());
-    Expect.equals(upperDotMitt, upperDotMitt.toUpperCase());
-    Expect.equals(lowerDotMitt, upperDotMitt.toLowerCase());
-    Expect.equals(upperDotMitt, lowerDotMitt.toUpperCase());
-    Expect.equals(lowerDotMitt, lowerDotMitt.toLowerCase());
-
-    var lowerOw = new String.fromCharCodes([0x10435]);
-    var upperOw = new String.fromCharCodes([0x1040d]);
-    Expect.equals(lowerOw.codeUnitAt(1), monkeyFace.codeUnitAt(1));
-    Expect.equals(upperOw, lowerOw.toUpperCase());
-    Expect.equals(upperOw, upperOw.toUpperCase());
-    Expect.equals(lowerOw, lowerOw.toLowerCase());
-    Expect.equals(lowerOw, upperOw.toLowerCase());
-  }
-}
-
-main() {
-  SurrogatePairTest.testMain();
-}