Revert "Move the linter core to the analyzer package"

pkg/analysis_server/lib/src/server/driver.dart

Index: pkg/analysis_server/lib/src/server/driver.dart
diff --git a/pkg/analysis_server/lib/src/server/driver.dart b/pkg/analysis_server/lib/src/server/driver.dart
index f0bf43879e5009777c042f20f7c13a01a676910b..2f180ee61aeef22b511de648a6009737ba0c12f4 100644
--- a/pkg/analysis_server/lib/src/server/driver.dart
+++ b/pkg/analysis_server/lib/src/server/driver.dart
@@ -26,7 +26,6 @@ import 'package:analyzer/src/generated/incremental_logger.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:args/args.dart';
 import 'package:linter/src/plugin/linter_plugin.dart';
-import 'package:linter/src/rules.dart' as linter;
 import 'package:plugin/manager.dart';
 import 'package:plugin/plugin.dart';
 
@@ -425,7 +424,6 @@ class Driver implements ServerStarter {
     plugins.addAll(_userDefinedPlugins);
     ExtensionManager manager = new ExtensionManager();
     manager.processPlugins(plugins);
-    linter.registerLintRules();
 
     String defaultSdkPath;
     if (results[SDK_OPTION] != null) {