Revert "Use backend targets to run Kernel transformations in Fasta"

pkg/kernel/tool/dartk.dart

Index: pkg/kernel/tool/dartk.dart
diff --git a/pkg/kernel/tool/dartk.dart b/pkg/kernel/tool/dartk.dart
index e47654f1ac5fadb516d45647fc5a4156243297c5..e42e9f33db638d7a14bf33ff2e145a9bea6c92f3 100755
--- a/pkg/kernel/tool/dartk.dart
+++ b/pkg/kernel/tool/dartk.dart
@@ -409,8 +409,7 @@ Future<CompilerOutcome> batchMain(
   if (target != null && canContinueCompilation) {
     CoreTypes coreTypes = new CoreTypes(program);
     ClassHierarchy hierarchy = new ClosedWorldClassHierarchy(program);
-    target.performModularTransformationsOnProgram(
-        coreTypes, hierarchy, program);
+    target.performModularTransformations(coreTypes, hierarchy, program);
     runVerifier();
     if (options['link']) {
       target.performGlobalTransformations(coreTypes, program);