VM: Remove non-existent/unused functions from precompiled entry points.

runtime/vm/precompiler.cc

 // 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.
 
 #include "vm/precompiler.h"
 
 #include "vm/cha.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/hash_table.h"
@@ skipping 232 matching lines @@
     { "dart:core", "UnsupportedError", "UnsupportedError." },
     { "dart:core", "_CastError", "_CastError._create" },
     { "dart:core", "_InternalError", "_InternalError." },
     { "dart:core", "_InvocationMirror", "_allocateInvocationMirror" },
     { "dart:core", "_JavascriptCompatibilityError",
                    "_JavascriptCompatibilityError." },
     { "dart:core", "_JavascriptIntegerOverflowError",
                    "_JavascriptIntegerOverflowError." },
     { "dart:core", "_TypeError", "_TypeError._create" },
     { "dart:isolate", "IsolateSpawnException", "IsolateSpawnException." },
-    { "dart:isolate", "_IsolateUnhandledException",
-                      "_IsolateUnhandledException." },
     { "dart:isolate", "::", "_getIsolateScheduleImmediateClosure" },
     { "dart:isolate", "::", "_setupHooks" },
     { "dart:isolate", "::", "_startMainIsolate" },
     { "dart:isolate", "_RawReceivePortImpl", "_handleMessage" },
     { "dart:isolate", "_RawReceivePortImpl", "_lookupHandler" },
     { "dart:isolate", "_SendPortImpl", "send" },
     { "dart:typed_data", "ByteData", "ByteData." },
     { "dart:typed_data", "ByteData", "ByteData._view" },
     { "dart:typed_data", "_ByteBuffer", "_ByteBuffer._New" },
     { "dart:_vmservice", "::", "_registerIsolate" },
@@ skipping 876 matching lines @@
       cls = it.GetNextClass();
       if (cls.IsDynamicClass()) {
         continue;  // class 'dynamic' is in the read-only VM isolate.
       }
       cls.set_is_allocated(false);
     }
   }
 }
 
 }  // namespace dart