Remove bogus deletion of a weak handle that has already been finalized.

runtime/vm/dart_api_impl_test.cc

 // Copyright (c) 2012, 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.
 
 #include "bin/builtin.h"
 #include "vm/compiler.h"
 #include "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 #include "include/dart_tools_api.h"
@@ skipping 3018 matching lines @@
             isolate->heap()->ExternalInWords(Heap::kOld) * kWordSize);
   // Large enough to trigger GC in old space. Not actually allocated.
   const intptr_t kHugeExternalSize = (kWordSize == 4) ? 513 * MB : 1025 * MB;
   Dart_NewWeakPersistentHandle(live,
                                NULL,
                                kHugeExternalSize,
                                NopCallback);
   // Expect small garbage to be collected.
   EXPECT_EQ(kHugeExternalSize,
             isolate->heap()->ExternalInWords(Heap::kOld) * kWordSize);
-  Dart_DeleteWeakPersistentHandle(reinterpret_cast<Dart_Isolate>(isolate),
-                                  weak);
   Dart_ExitScope();
 }
 
 
 TEST_CASE(WeakPersistentHandleExternalAllocationSizeOddReferents) {
   Heap* heap = Isolate::Current()->heap();
   Dart_WeakPersistentHandle weak1 = NULL;
   static const intptr_t kWeak1ExternalSize = 1 * KB;
   Dart_WeakPersistentHandle weak2 = NULL;
   static const intptr_t kWeak2ExternalSize = 2 * KB;
@@ skipping 7108 matching lines @@
   result = Dart_Invoke(lib,
                        NewString("foozoo"),
                        0,
                        NULL);
   EXPECT(Dart_IsError(result));
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart