Remove an unused request and the associated type

pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart

 // Copyright (c) 2017, 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 file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/spec/generate_files".
 
 /**
  * Matchers for data types defined in the analysis server API
@@ skipping 188 matching lines @@
   "IMPORT",
   "IDENTIFIER",
   "INVOCATION",
   "KEYWORD",
   "NAMED_ARGUMENT",
   "OPTIONAL_ARGUMENT",
   "PARAMETER"
 ]);
 
 /**
- * ContextBuilderOptions
- *
- * {
- *   "dartSdkSummaryPath": optional FilePath
- *   "defaultAnalysisOptionsFilePath": optional List<FilePath>
- *   "declaredVariables": optional Map<String, String>
- *   "defaultPackageFilePath": optional List<FilePath>
- *   "defaultPackagesDirectoryPath": optional List<FilePath>
- * }
- */
-final Matcher isContextBuilderOptions = new LazyMatcher(
-    () => new MatchesJsonObject("ContextBuilderOptions", null, optionalFields: {
-          "dartSdkSummaryPath": isFilePath,
-          "defaultAnalysisOptionsFilePath": isListOf(isFilePath),
-          "declaredVariables": isMapOf(isString, isString),
-          "defaultPackageFilePath": isListOf(isFilePath),
-          "defaultPackagesDirectoryPath": isListOf(isFilePath)
-        }));
-
-/**
  * ContextRoot
  *
  * {
  *   "root": FilePath
  *   "exclude": List<FilePath>
  *   "optionsFile": optional FilePath
  * }
  */
 final Matcher isContextRoot = new LazyMatcher(() => new MatchesJsonObject(
     "ContextRoot", {"root": isFilePath, "exclude": isListOf(isFilePath)},
@@ skipping 779 matching lines @@
 final Matcher isAnalysisReanalyzeParams = new LazyMatcher(() =>
     new MatchesJsonObject("analysis.reanalyze params", null,
         optionalFields: {"roots": isListOf(isFilePath)}));
 
 /**
  * analysis.reanalyze result
  */
 final Matcher isAnalysisReanalyzeResult = isNull;
 
 /**
- * analysis.setContextBuilderOptions params
- *
- * {
- *   "options": ContextBuilderOptions
- * }
- */
-final Matcher isAnalysisSetContextBuilderOptionsParams = new LazyMatcher(() =>
-    new MatchesJsonObject("analysis.setContextBuilderOptions params",
-        {"options": isContextBuilderOptions}));
-
-/**
- * analysis.setContextBuilderOptions result
- */
-final Matcher isAnalysisSetContextBuilderOptionsResult = isNull;
-
-/**
  * analysis.setContextRoots params
  *
  * {
  *   "roots": List<ContextRoot>
  * }
  */
 final Matcher isAnalysisSetContextRootsParams = new LazyMatcher(() =>
     new MatchesJsonObject(
         "analysis.setContextRoots params", {"roots": isListOf(isContextRoot)}));
 
@@ skipping 439 matching lines @@
 
 /**
  * rename options
  *
  * {
  *   "newName": String
  * }
  */
 final Matcher isRenameOptions = new LazyMatcher(
     () => new MatchesJsonObject("rename options", {"newName": isString}));