Remove some (but not all) unused methods in analyzer.

pkg/analyzer/lib/src/generated/sdk_io.dart

 // Copyright (c) 2014, 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 code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.sdk.io;
 
 import 'package:analyzer/src/generated/java_engine.dart';
@@ skipping 494 matching lines @@
       return new SdkLibrariesReader(useDart2jsPaths).readFromFile(librariesFile, contents);
     } catch (exception, stackTrace) {
       AnalysisEngine.instance.logger.logError(
           "Could not initialize the library map from ${librariesFile.getAbsolutePath()}",
           new CaughtException(exception, stackTrace));
       return new LibraryMap();
     }
   }
 
   /**
-   * Ensure that the dart VM is executable. If it is not, make it executable and log that it was
-   * necessary for us to do so.
-   */
-  void _ensureVmIsExecutable() {
-  }
-
-  /**
    * Return the name of the file containing the Dartium executable.
    *
    * @return the name of the file containing the Dartium executable
    */
   String get dartiumBinaryName {
     if (OSUtilities.isWindows()) {
       return _DARTIUM_EXECUTABLE_NAME_WIN;
     } else if (OSUtilities.isMac()) {
       return _DARTIUM_EXECUTABLE_NAME_MAC;
     } else {
@@ skipping 82 matching lines @@
     Parser parser = new Parser(source, errorListener);
     CompilationUnit unit = parser.parseCompilationUnit(scanner.tokenize());
     SdkLibrariesReader_LibraryBuilder libraryBuilder = new SdkLibrariesReader_LibraryBuilder(_useDart2jsPaths);
     // If any syntactic errors were found then don't try to visit the AST structure.
     if (!errorListener.errorReported) {
       unit.accept(libraryBuilder);
     }
     return libraryBuilder.librariesMap;
   }
 }