Remove methods on StackTrace class.

sdk/lib/_internal/compiler/implementation/lib/core_patch.dart

 // 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.
 
 // Patch file for dart:core classes.
 import 'dart:_interceptors';
 import 'dart:_js_helper' show checkNull,
                               getRuntimeTypeString,
                               isJsArray,
                               JSSyntaxRegExp,
@@ skipping 271 matching lines @@
       String formalParameters = sb.toString();
       return "NoSuchMethodError: incorrect number of arguments passed to "
           "method named '$_memberName'\n"
           "Receiver: ${Error.safeToString(_receiver)}\n"
           "Tried calling: $_memberName($actualParameters)\n"
           "Found: $_memberName($formalParameters)";
     }
   }
 }
 
-patch class StackTrace {
-  patch String get fullStackTrace {
-    throw new UnsupportedError('fullStackTrace');
-  }
-
-  patch String get stackTrace {
-    throw new UnsupportedError('stackTrace');
-  }
-}
-
 patch class Symbol {
   final String _name;
 
   patch const Symbol(String name) :
     this._name = name;
 
   patch bool operator ==(other) {
     return other is Symbol && _name == other._name;
   }
 
   patch int get hashCode {
     const arbitraryPrime = 664597;
     return 0x1fffffff & (arbitraryPrime * _name.hashCode);
   }
 }