Remove tests for generalized tear-offs.

tests/language_strong/tearoff_constructor_basic_test.dart

-// Copyright (c) 2015, 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.
-
-// Basic test for tear-off constructor closures.
-
-import "package:expect/expect.dart";
-
-class A {
-  // Implicit constructor A();
-  var f1 = "A.f1";
-}
-
-class P {
-  var x, y;
-  P(this.x, this.y);
-  factory P.origin() { return new P(0,0); }
-  factory P.ursprung() = P.origin;
-  P.onXAxis(x) : this(x, 0);
-}
-
-class C<T> {
-  T f1;
-  C(T p) : f1 = p;
-  C.n([T p]) : f1 = p;
-  listMaker() { return new List<T>#; }  // Closurize type parameter.
-}
-
-
-testMalformed() {
-  Expect.throws(() => new NoSuchClass#);
-  Expect.throws(() => new A#noSuchContstructor);
-}
-
-testA() {
-  var cc = new A#;  // Closurize implicit constructor.
-  var o = cc();
-  Expect.equals("A.f1", o.f1);
-  Expect.equals("A.f1", (new A#)().f1);
-  Expect.throws(() => new A#foo);
-}
-
-testP() {
-  var cc = new P#origin;
-  var o = cc();
-  Expect.equals(0, o.x);
-  cc = new P#ursprung;
-  o = cc();
-  Expect.equals(0, o.x);
-  cc = new P#onXAxis;
-  o = cc(5);
-  Expect.equals(0, o.y);
-  Expect.equals(5, o.x);
-  Expect.throws(() => cc(1, 1));  // Too many arguments.
-}
-
-testC() {
-  var cc = new C<int>#;
-  var o = cc(5);
-  Expect.equals("int", "${o.f1.runtimeType}");
-  Expect.throws(() => cc());  // Missing constructor parameter.
-
-  cc = new C<String>#n;
-  o = cc("foo");
-  Expect.equals("String", "${o.f1.runtimeType}");
-  o = cc();
-  Expect.equals(null, o.f1);
-
-  cc = o.listMaker();
-  Expect.isTrue(cc is Function);
-  var l = cc();
-  Expect.equals("List<String>", "${l.runtimeType}");
-}
-
-main() {
-  testA();
-  testC();
-  testP();
-  testMalformed();
-}