Remove convertConstructors.

pkg/front_end/lib/src/fasta/source/source_loader.dart

Index: pkg/front_end/lib/src/fasta/source/source_loader.dart
diff --git a/pkg/front_end/lib/src/fasta/source/source_loader.dart b/pkg/front_end/lib/src/fasta/source/source_loader.dart
index f50f8ddbd87ddfed8edba92588b2a2a5a0dd566d..9abd7ab983b0228168c1752d76957e5be7eb4e67 100644
--- a/pkg/front_end/lib/src/fasta/source/source_loader.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_loader.dart
@@ -228,14 +228,6 @@ class SourceLoader<L> extends Loader<L> {
     ticker.logMs("Resolved $typeCount types");
   }
 
-  void convertConstructors() {
-    int count = 0;
-    builders.forEach((Uri uri, LibraryBuilder library) {
-      count += library.convertConstructors(null);
-    });
-    ticker.logMs("Converted $count constructors");
-  }
-
   void finishStaticInvocations() {
     int count = 0;
     builders.forEach((Uri uri, LibraryBuilder library) {