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

pkg/kernel/lib/transformations/erasure.dart

Index: pkg/kernel/lib/transformations/erasure.dart
diff --git a/pkg/kernel/lib/transformations/erasure.dart b/pkg/kernel/lib/transformations/erasure.dart
index 7923928edfa41ea9dbc8a0d3995b2b3c67f092f4..d2cb413e9e994b17ccca167f626badcb1cb39fe5 100644
--- a/pkg/kernel/lib/transformations/erasure.dart
+++ b/pkg/kernel/lib/transformations/erasure.dart
@@ -5,18 +5,6 @@ library kernel.transformations.erasure;
 
 import '../ast.dart';
 import '../type_algebra.dart';
-import '../core_types.dart';
-
-Program transformProgram(CoreTypes coreTypes, Program program) {
-  program.accept(new Erasure());
-}
-
-void transformLibraries(CoreTypes coreTypes, List<Library> libraries) {
-  Erasure erasure = new Erasure();
-  for (Library library in libraries) {
-    library.accept(erasure);
-  }
-}
 
 /// This pass is a temporary measure to run strong mode code in the VM, which
 /// does not yet have the necessary runtime support.