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

pkg/compiler/lib/src/constants/expressions.dart

Index: pkg/compiler/lib/src/constants/expressions.dart
diff --git a/pkg/compiler/lib/src/constants/expressions.dart b/pkg/compiler/lib/src/constants/expressions.dart
index 905ac3a0e5430863d66f1d2317055481c1e02795..1387ca4e48e35aadc25b0e0fbce8387326229fbc 100644
--- a/pkg/compiler/lib/src/constants/expressions.dart
+++ b/pkg/compiler/lib/src/constants/expressions.dart
@@ -738,12 +738,10 @@ class TypeConstantExpression extends ConstantExpression {
   final String name;
 
   TypeConstantExpression(this.type, this.name) {
-    assert(
-        type.isInterfaceType ||
-            type.isTypedef ||
-            type.isFunctionType ||
-            type.isDynamic,
-        "Unexpected type constant type: $type");
+    assert(type.isInterfaceType ||
+        type.isTypedef ||
+        type.isFunctionType ||
+        type.isDynamic);
   }
 
   ConstantExpressionKind get kind => ConstantExpressionKind.TYPE;