Remove ResolutionEnqueuer._applyFirstMemberUse

pkg/compiler/lib/src/common/backend_api.dart

Index: pkg/compiler/lib/src/common/backend_api.dart
diff --git a/pkg/compiler/lib/src/common/backend_api.dart b/pkg/compiler/lib/src/common/backend_api.dart
index e978d7e9cf58bd428ede7e6f280aee2c566e445e..fb4f1537c442a8ad10d6649e9aedce8e81001b95 100644
--- a/pkg/compiler/lib/src/common/backend_api.dart
+++ b/pkg/compiler/lib/src/common/backend_api.dart
@@ -173,13 +173,6 @@ abstract class Backend extends Target {
   /// specific [WorldImpact] of this is returned.
   WorldImpact registerGetOfStaticFunction() => const WorldImpact();
 
-  /// Called to register that the `runtimeType` property has been accessed. Any
-  /// backend specific [WorldImpact] of this is returned.
-  WorldImpact registerRuntimeType() => const WorldImpact();
-
-  /// Called to register a `noSuchMethod` implementation.
-  void registerNoSuchMethod(FunctionElement noSuchMethodElement) {}
-
   /// Called to enable support for `noSuchMethod`. Any backend specific
   /// [WorldImpact] of this is returned.
   WorldImpact enableNoSuchMethod() => const WorldImpact();