Revert "Towards compiling Hello World!" and "Compile and run Hello World!"

tests/compiler/dart2js/kernel/compile_from_dill_test.dart

Index: tests/compiler/dart2js/kernel/compile_from_dill_test.dart
diff --git a/tests/compiler/dart2js/kernel/compile_from_dill_test.dart b/tests/compiler/dart2js/kernel/compile_from_dill_test.dart
index 522fc258395279dfca87f59b4d722a7c0977bce2..49b2add192f05bedabf92b035af5ee95dca7e23a 100644
--- a/tests/compiler/dart2js/kernel/compile_from_dill_test.dart
+++ b/tests/compiler/dart2js/kernel/compile_from_dill_test.dart
@@ -141,7 +141,6 @@ Future<ResultKind> mainInternal(List<String> args,
   checkBackendUsage(closedWorld1.backendUsage, closedWorld2.backendUsage,
       equivalence.defaultStrategy);
 
-  print('--- checking resolution enqueuers ----------------------------------');
   checkResolutionEnqueuers(closedWorld1.backendUsage, closedWorld2.backendUsage,
       compiler1.enqueuer.resolution, compiler2.enqueuer.resolution,
       elementEquivalence: (a, b) => equivalence.entityEquivalence(a, b),
@@ -151,7 +150,6 @@ Future<ResultKind> mainInternal(List<String> args,
       elementFilter: elementFilter,
       verbose: arguments.verbose);
 
-  print('--- checking closed worlds -----------------------------------------');
   checkClosedWorlds(closedWorld1, closedWorld2,
       strategy: equivalence.defaultStrategy,
       verbose: arguments.verbose,
@@ -162,7 +160,6 @@ Future<ResultKind> mainInternal(List<String> args,
   // TODO(johnniwinther): Perform equivalence tests on the model: codegen world
   // impacts, program model, etc.
 
-  print('--- checking codegen enqueuers--------------------------------------');
   checkCodegenEnqueuers(compiler1.enqueuer.codegenEnqueuerForTesting,
       compiler2.enqueuer.codegenEnqueuerForTesting,
       elementEquivalence: (a, b) => equivalence.entityEquivalence(a, b),
@@ -172,7 +169,6 @@ Future<ResultKind> mainInternal(List<String> args,
       elementFilter: elementFilter,
       verbose: arguments.verbose);
 
-  print('--- checking output------- -----------------------------------------');
   collector1.outputMap
       .forEach((OutputType outputType, Map<String, BufferedOutputSink> map1) {
     if (outputType == OutputType.sourceMap) {