Revert "Move the linter core to the analyzer package"

pkg/analyzer_cli/lib/src/driver.dart

Index: pkg/analyzer_cli/lib/src/driver.dart
diff --git a/pkg/analyzer_cli/lib/src/driver.dart b/pkg/analyzer_cli/lib/src/driver.dart
index b29e3abd9bc39bf60f73e106da403c830dcab370..35caf046d2348363a35ba16652b8ea31bd50460b 100644
--- a/pkg/analyzer_cli/lib/src/driver.dart
+++ b/pkg/analyzer_cli/lib/src/driver.dart
@@ -42,7 +42,6 @@ import 'package:analyzer_cli/src/options.dart';
 import 'package:analyzer_cli/src/perf_report.dart';
 import 'package:analyzer_cli/starter.dart';
 import 'package:linter/src/plugin/linter_plugin.dart';
-import 'package:linter/src/rules.dart' as linter;
 import 'package:package_config/discovery.dart' as pkg_discovery;
 import 'package:package_config/packages.dart' show Packages;
 import 'package:package_config/packages_file.dart' as pkgfile show parse;
@@ -624,8 +623,6 @@ class Driver implements CommandLineStarter {
 
     ExtensionManager manager = new ExtensionManager();
     manager.processPlugins(plugins);
-
-    linter.registerLintRules();
   }
 
   /// Analyze a single source.