Remove 'blaze doc_ext' command.

We prefer to focus on the web documentation instead.

RELNOTES[INC]: 'blaze doc_ext' command removed.

--
MOS_MIGRATED_REVID=93871336
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java b/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java
index be4a04f..825b035 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java
@@ -79,7 +79,6 @@
 import com.google.devtools.build.lib.runtime.commands.QueryCommand;
 import com.google.devtools.build.lib.runtime.commands.RunCommand;
 import com.google.devtools.build.lib.runtime.commands.ShutdownCommand;
-import com.google.devtools.build.lib.runtime.commands.SkylarkCommand;
 import com.google.devtools.build.lib.runtime.commands.TestCommand;
 import com.google.devtools.build.lib.runtime.commands.VersionCommand;
 import com.google.devtools.build.lib.server.RPCServer;
@@ -1574,7 +1573,6 @@
         new CanonicalizeCommand(),
         new CleanCommand(),
         new HelpCommand(),
-        new SkylarkCommand(),
         new InfoCommand(),
         new ProfileCommand(),
         new QueryCommand(),
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/commands/SkylarkCommand.java b/src/main/java/com/google/devtools/build/lib/runtime/commands/SkylarkCommand.java
deleted file mode 100644
index 70082ef..0000000
--- a/src/main/java/com/google/devtools/build/lib/runtime/commands/SkylarkCommand.java
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2014 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//    http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.google.devtools.build.lib.runtime.commands;
-
-import com.google.devtools.build.docgen.SkylarkDocumentationProcessor;
-import com.google.devtools.build.lib.events.Event;
-import com.google.devtools.build.lib.events.Reporter;
-import com.google.devtools.build.lib.runtime.BlazeCommand;
-import com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.ShutdownBlazeServerException;
-import com.google.devtools.build.lib.runtime.BlazeRuntime;
-import com.google.devtools.build.lib.runtime.Command;
-import com.google.devtools.build.lib.util.ExitCode;
-import com.google.devtools.build.lib.util.io.OutErr;
-import com.google.devtools.common.options.OptionsParser;
-import com.google.devtools.common.options.OptionsProvider;
-
-import java.util.Map;
-
-/**
- * The 'doc_ext' command, which prints the extension API doc.
- */
-@Command(name = "doc_ext",
-allowResidue = true,
-mustRunInWorkspace = false,
-shortDescription = "Prints help for commands, or the index.",
-help = "resource:skylark.txt")
-public final class SkylarkCommand implements BlazeCommand {
-
-  @Override
-  public ExitCode exec(BlazeRuntime runtime, OptionsProvider options)
-      throws ShutdownBlazeServerException {
-    OutErr outErr = runtime.getReporter().getOutErr();
-    if (options.getResidue().isEmpty()) {
-      printTopLevelAPIDoc(outErr);
-      return ExitCode.SUCCESS;
-    }
-    if (options.getResidue().size() != 1) {
-      runtime.getReporter().handle(Event.error("Cannot specify more than one parameters"));
-      return ExitCode.COMMAND_LINE_ERROR;
-    }
-    return printAPIDoc(options.getResidue().get(0), outErr, runtime.getReporter());
-  }
-
-  private ExitCode printAPIDoc(String param, OutErr outErr, Reporter reporter) {
-    String params[] = param.split("\\.");
-    if (params.length > 2) {
-      reporter.handle(Event.error("Identifier not found: " + param));
-      return ExitCode.COMMAND_LINE_ERROR;
-    }
-    SkylarkDocumentationProcessor processor = new SkylarkDocumentationProcessor();
-    String doc = processor.getCommandLineAPIDoc(params);
-    if (doc == null) {
-      reporter.handle(Event.error("Identifier not found: " + param));
-      return ExitCode.COMMAND_LINE_ERROR;
-    }
-    outErr.printOut(doc);
-    return ExitCode.SUCCESS;
-  }
-
-  private void printTopLevelAPIDoc(OutErr outErr) {
-    SkylarkDocumentationProcessor processor = new SkylarkDocumentationProcessor();
-    outErr.printOut("Top level language modules, methods and objects:\n\n");
-    for (Map.Entry<String, String> entry : processor.collectTopLevelModules().entrySet()) {
-      outErr.printOut(entry.getKey() + ": " + entry.getValue());
-    }
-  }
-
-  @Override
-  public void editOptions(BlazeRuntime runtime, OptionsParser optionsParser) {}
-}