Remove unnecessary semicolons from Python code.

lib/dom/scripts/systeminterface.py

 #!/usr/bin/python
 # 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.
 
 """This module providesfunctionality for systems to generate
 Dart interfaces from the IDL database."""
 
 import os
 import systembase
@@ skipping 88 matching lines @@
     extends_str = ''
     if extends:
       extends_str += ' extends ' + ', '.join(extends)
       comment = ','
     if suppressed_extends:
       extends_str += ' /*%s %s */' % (comment, ', '.join(suppressed_extends))
 
     factory_provider = None
     constructor_info = AnalyzeConstructor(self._interface)
     if constructor_info:
-      factory_provider = '_' + typename + 'FactoryProvider';
+      factory_provider = '_' + typename + 'FactoryProvider'
 
     if typename in interface_factories:
       factory_provider = interface_factories[typename]
 
     if factory_provider:
       extends_str += ' default ' + factory_provider
 
     # TODO(vsm): Add appropriate package / namespace syntax.
     (self._members_emitter,
      self._top_level_emitter) = self._emitter.Emit(
          self._template + '$!TOP_LEVEL',
          ID=typename,
          EXTENDS=extends_str)
 
     if constructor_info:
       self._members_emitter.Emit(
           '\n'
           '  $CTOR($PARAMS);\n',
           CTOR=typename,
-          PARAMS=constructor_info.ParametersInterfaceDeclaration());
+          PARAMS=constructor_info.ParametersInterfaceDeclaration())
 
     element_type = MaybeTypedArrayElementTypeInHierarchy(
         self._interface, self._system._database)
     if element_type:
       self._members_emitter.Emit(
           '\n'
           '  $CTOR(int length);\n'
           '\n'
           '  $CTOR.fromList(List<$TYPE> list);\n'
           '\n'
@@ skipping 50 matching lines @@
     """
     Arguments:
       operations - contains the overloads, one or more operations with the same
         name.
     """
     self._members_emitter.Emit('\n'
                                '  $TYPE $NAME($PARAMS);\n',
                                TYPE=info.type_name,
                                NAME=info.name,
                                PARAMS=info.ParametersInterfaceDeclaration())