cleanup scanner

pkg/analyzer/lib/src/dart/scanner/scanner.dart

Index: pkg/analyzer/lib/src/dart/scanner/scanner.dart
diff --git a/pkg/analyzer/lib/src/dart/scanner/scanner.dart b/pkg/analyzer/lib/src/dart/scanner/scanner.dart
index a4be9086f60dedba3e56bd1350102d47c55fe67e..821768723e95b5591c59c404527129a734404a7f 100644
--- a/pkg/analyzer/lib/src/dart/scanner/scanner.dart
+++ b/pkg/analyzer/lib/src/dart/scanner/scanner.dart
@@ -10,8 +10,6 @@ import 'package:analyzer/src/dart/error/syntactic_errors.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:front_end/src/fasta/scanner.dart' as fasta;
-import 'package:front_end/src/fasta/scanner/abstract_scanner.dart'
-    show fastaSupportsGenericMethodComments;
 import 'package:front_end/src/fasta/scanner/precedence.dart' as fasta;
 import 'package:front_end/src/scanner/errors.dart' show translateErrorToken;
 import 'package:front_end/src/scanner/scanner.dart' as fe;
@@ -149,7 +147,7 @@ class _Scanner2 implements Scanner {
   Token tokenize() {
     // Note: Fasta always supports lazy assignment operators (`&&=` and `||=`),
     // so we can ignore the `scanLazyAssignmentOperators` flag.
-    if (scanGenericMethodComments && !fastaSupportsGenericMethodComments) {
+    if (scanGenericMethodComments) {
       // Fasta doesn't support generic method comments.
       // TODO(danrubel): remove this once fasts support has been added.
       throw 'No generic method comment support in Fasta';