Revert "This is a fixed up version of:"

tools/testing/dart/compiler_configuration.dart

Index: tools/testing/dart/compiler_configuration.dart
diff --git a/tools/testing/dart/compiler_configuration.dart b/tools/testing/dart/compiler_configuration.dart
index 7b3a837339238ba0e54d971a6a460718836c5ad0..fc1d536e0e0f649d5a505dc54ddb237e28e9e9f6 100644
--- a/tools/testing/dart/compiler_configuration.dart
+++ b/tools/testing/dart/compiler_configuration.dart
@@ -155,12 +155,7 @@ class NoneCompilerConfiguration extends CompilerConfiguration {
       List<String> sharedOptions,
       List<String> originalArguments,
       CommandArtifact artifact) {
-    List<String> args = [];
-    if (isChecked) {
-      args.add('--enable_asserts');
-      args.add('--enable_type_checks');
-    }
-    return args
+    return <String>[]
         ..addAll(vmOptions)
         ..addAll(sharedOptions)
         ..addAll(originalArguments);