Remove unused import

Change-Id: I41cedfd11cf8e6bd2e9ea7e821c0c35930713afd
Reviewed-on: https://dart-review.googlesource.com/c/90443
Auto-Submit: Paul Berry <paulberry@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
diff --git a/pkg/analyzer/lib/src/context/builder.dart b/pkg/analyzer/lib/src/context/builder.dart
index 351695b..86cdd07 100644
--- a/pkg/analyzer/lib/src/context/builder.dart
+++ b/pkg/analyzer/lib/src/context/builder.dart
@@ -30,7 +30,6 @@
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/hint/sdk_constraint_extractor.dart';
-import 'package:analyzer/src/lint/registry.dart';
 import 'package:analyzer/src/plugin/resolver_provider.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/summary/summary_sdk.dart';