remove docgen source and targets from build

pkg/docgen/lib/docgen.dart

Index: pkg/docgen/lib/docgen.dart
diff --git a/pkg/docgen/lib/docgen.dart b/pkg/docgen/lib/docgen.dart
deleted file mode 100644
index a9f171a2c79c45a0d4fe8a8a153f6fc4c06857bd..0000000000000000000000000000000000000000
--- a/pkg/docgen/lib/docgen.dart
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright (c) 2013, 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.
-
-/// **docgen** is a tool for creating machine readable representations of Dart
-/// code metadata, including: classes, members, comments and annotations.
-///
-/// docgen is run on a `.dart` file or a directory containing `.dart` files.
-///
-///      $ dart docgen.dart [OPTIONS] [FILE/DIR]
-///
-/// This creates files called `docs/<library_name>.yaml` in your current
-/// working directory.
-library docgen;
-
-import 'dart:async';
-
-import 'src/generator.dart' as gen;
-import 'src/viewer.dart' as viewer;
-
-export 'src/generator.dart' show getMirrorSystem;
-export 'src/library_helpers.dart' show getDocgenObject;
-export 'src/models.dart';
-export 'src/package_helpers.dart' show packageNameFor;
-
-/// Docgen constructor initializes the link resolver for markdown parsing.
-/// Also initializes the command line arguments.
-///
-/// [packageRoot] is the packages directory of the directory being analyzed.
-/// If [includeSdk] is `true`, then any SDK libraries explicitly imported will
-/// also be documented.
-/// If [parseSdk] is `true`, then all Dart SDK libraries will be documented.
-/// This option is useful when only the SDK libraries are needed.
-/// If [compile] is `true`, then after generating the documents, compile the
-/// viewer with dart2js.
-/// If [serve] is `true`, then after generating the documents we fire up a
-/// simple server to view the documentation.
-///
-/// Returned Future completes with true if document generation is successful.
-Future<bool> docgen(List<String> files, {String packageRoot,
-    bool includePrivate: false, bool includeSdk: false, bool parseSdk: false,
-    String introFileName: '', String out: gen.DEFAULT_OUTPUT_DIRECTORY,
-    List<String> excludeLibraries: const [],
-    bool includeDependentPackages: false, bool compile: false,
-    bool serve: false, bool noDocs: false, String startPage,
-    String pubScript : 'pub', String dartBinary: 'dart',
-    bool indentJSON: false, String sdk}) {
-  var result;
-  if (!noDocs) {
-    viewer.ensureMovedViewerCode();
-    result = gen.generateDocumentation(files, packageRoot: packageRoot,
-        includePrivate: includePrivate,
-        includeSdk: includeSdk, parseSdk: parseSdk,
-        introFileName: introFileName, out: out,
-        excludeLibraries: excludeLibraries,
-        includeDependentPackages: includeDependentPackages,
-        startPage: startPage, pubScriptValue: pubScript,
-        dartBinaryValue: dartBinary, indentJSON: indentJSON, sdk: sdk);
-    viewer.addBackViewerCode();
-    if (compile || serve) {
-      result.then((success) {
-        if (success) {
-          viewer.createViewer(serve);
-        }
-      });
-    }
-  } else if (compile || serve) {
-    gen.pubScript = pubScript;
-    gen.dartBinary = dartBinary;
-    viewer.createViewer(serve);
-  }
-  return result;
-}