Disable finding plugin locations in the pubspec

pkg/analysis_server/lib/src/plugin/plugin_locator.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.
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:yaml/yaml.dart';
 
 /**
  * An object used to locate a plugin within a package.
  */
 class PluginLocator {
   /**
    * The key used in the `pubspec.yaml` file to specify the location of the
    * analysis plugin.
    */
   static const String analyzerPluginKey = 'analyzer_plugin';
@@ skipping 48 matching lines @@
    */
   String findPlugin(String packageRoot) {
     return pluginMap.putIfAbsent(packageRoot, () => _findPlugin(packageRoot));
   }
 
   /**
    * The implementation of [findPlugin].
    */
   String _findPlugin(String packageRoot) {
     Folder packageFolder = resourceProvider.getFolder(packageRoot);
-    File pubspecFile = packageFolder.getChildAssumingFile(pubspecFileName);
-    if (pubspecFile.exists) {
-      try {
-        YamlDocument document = loadYamlDocument(pubspecFile.readAsStringSync(),
-            sourceUrl: pubspecFile.toUri());
-        YamlNode contents = document.contents;
-        if (contents is YamlMap) {
-          String pluginPath = contents[analyzerPluginKey];
-          if (pluginPath != null) {
-            Folder pluginFolder =
-                packageFolder.getChildAssumingFolder(pluginPath);
-            if (pluginFolder.exists) {
-              return pluginFolder.path;
-            }
-          }
-        }
-      } catch (exception) {
-        // If we can't read the file, or if it isn't valid YAML, then ignore it.
-      }
-    }
+    // TODO(brianwilkerson) Re-enable this after deciding how we want to deal
+    // with discovery of plugins.
+//    import 'package:yaml/yaml.dart';
+//    File pubspecFile = packageFolder.getChildAssumingFile(pubspecFileName);
+//    if (pubspecFile.exists) {
+//      try {
+//        YamlDocument document = loadYamlDocument(pubspecFile.readAsStringSync(),
+//            sourceUrl: pubspecFile.toUri());
+//        YamlNode contents = document.contents;
+//        if (contents is YamlMap) {
+//          String pluginPath = contents[analyzerPluginKey];
+//          if (pluginPath != null) {
+//            Folder pluginFolder =
+//                packageFolder.getChildAssumingFolder(pluginPath);
+//            if (pluginFolder.exists) {
+//              return pluginFolder.path;
+//            }
+//          }
+//        }
+//      } catch (exception) {
+//        // If we can't read the file, or if it isn't valid YAML, then ignore it.
+//      }
+//    }
     Folder pluginFolder = packageFolder
         .getChildAssumingFolder(toolsFolderName)
         .getChildAssumingFolder(defaultPluginFolderName);
     if (pluginFolder.exists) {
       return pluginFolder.path;
     }
     return null;
   }
 }