Revert "Infer guaranteed types for static calls that are only called once."

dart/lib/compiler/implementation/ssa/builder.dart

Index: dart/lib/compiler/implementation/ssa/builder.dart
diff --git a/dart/lib/compiler/implementation/ssa/builder.dart b/dart/lib/compiler/implementation/ssa/builder.dart
index 7aba3c44accefc88a226b09e8344a2dba8bc4830..6f72e0441d5bddb8822d44995fcd7cfd0299d721 100644
--- a/dart/lib/compiler/implementation/ssa/builder.dart
+++ b/dart/lib/compiler/implementation/ssa/builder.dart
@@ -3299,7 +3299,8 @@ class SsaBuilder extends ResolvedVisitor implements Visitor {
     if (element === builder.compiler.boolClass) return HType.BOOLEAN;
     if (element === builder.compiler.doubleClass) return HType.DOUBLE;
     if (element === builder.compiler.intClass) return HType.INTEGER;
-    if (element === builder.compiler.listClass) return HType.READABLE_ARRAY;
+    // TODO(ahe): How to map listClass to HType?
+    if (element === builder.compiler.listClass) return HType.UNKNOWN;
     if (element === builder.compiler.nullClass) return HType.NULL;
     if (element === builder.compiler.stringClass) return HType.STRING;
     return HType.UNKNOWN;