Remove calls to registerDependency from within resolution.

pkg/compiler/lib/src/js_backend/backend.dart

Index: pkg/compiler/lib/src/js_backend/backend.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend.dart b/pkg/compiler/lib/src/js_backend/backend.dart
index 28c065758faf15ce69943b15d6d4c810d3b5f774..3478e8112172fcb96f6639175ffe6dfedf3df2de 100644
--- a/pkg/compiler/lib/src/js_backend/backend.dart
+++ b/pkg/compiler/lib/src/js_backend/backend.dart
@@ -2948,15 +2948,6 @@ class JavaScriptResolutionCallbacks extends ResolutionCallbacks {
         registerBackendImpact(transformed, impacts.computeSignature);
       }
     }
-    // TODO(johnniwinther): Remove this when dependency tracking is done on
-    // the world impact itself.
-    for (InterfaceType instantiatedType in worldImpact.instantiatedTypes) {
-      transformed.registerInstantiatedType(instantiatedType);
-    }
-    for (Element element in worldImpact.staticUses) {
-      transformed.registerStaticUse(element);
-    }
-
     return transformed;
   }