Remove unused. (#4156)

Author: davidmorgan

_test/test/doctor_test.dart

@@ -3,7 +3,9 @@
 - Bug fix: with `build_runner serve`, special handling of paths containing
   `/packages/` was hiding actual folders called `packages`. Serve the actual
   folders first, before trying the package lookup.
-- Remove `lib/build_script_generate.dart` and `bin/graph_inspector.dart`.
+- Remove undocumented / unused features: `lib/build_script_generate.dart`,
+  `bin/graph_inspector.dart`, `build_runner doctor` and
+  `build_runner generate-build-script` commands.
 
 ## 2.7.0
 

build_runner/CHANGELOG.md

@@ -16,7 +16,6 @@ import 'package:io/ansi.dart';
 import 'package:io/io.dart';
 
 import 'src/commands/clean.dart';
-import 'src/commands/generate_build_script.dart';
 
 Future<void> main(List<String> args) async {
   // Use the actual command runner to parse the args and immediately print the
@@ -26,7 +25,7 @@ Future<void> main(List<String> args) async {
     [],
     await PackageGraph.forThisPackage(),
   );
-  var localCommands = [CleanCommand(), GenerateBuildScript()];
+  var localCommands = [CleanCommand()];
   var localCommandNames = localCommands.map((c) => c.name).toSet();
   for (var command in localCommands) {
     commandRunner.addCommand(command);

build_runner/bin/build_runner.dart

@@ -11,7 +11,6 @@ import 'package:build_runner_core/build_runner_core.dart';
 import 'base_command.dart' show lineLength;
 import 'build.dart';
 import 'daemon.dart';
-import 'doctor.dart';
 import 'run_script.dart';
 import 'serve.dart';
 import 'test.dart';
@@ -33,7 +32,6 @@ class BuildCommandRunner extends CommandRunner<int> {
       super('build_runner', 'Unified interface for running Dart builds.') {
     addCommand(BuildCommand());
     addCommand(DaemonCommand());
-    addCommand(DoctorCommand());
     addCommand(RunCommand());
     addCommand(ServeCommand());
     addCommand(TestCommand(packageGraph));