Re-remove AstBuilder.accumulateIdentifierComponents.

pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart

Index: pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart b/pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart
index c1174f5f1c6bb7af7cfe178dc52dba6fb3645772..7470f532db211db3a998d9468b99401b4bb2db4c 100644
--- a/pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart
+++ b/pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart
@@ -44,11 +44,6 @@ class AstBuilder extends ScopeListener {
   @override
   final Uri uri;
 
-  /// If `true`, the first call to [handleIdentifier] should push a
-  /// List<SimpleIdentifier> on the stack, and [handleQualified] should append
-  /// to the list.
-  var accumulateIdentifierComponents = false;
-
   /// The name of the class currently being parsed, or `null` if no class is
   /// being parsed.
   String className;