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

dart/tests/compiler/dart2js/compiler_helper.dart

Index: dart/tests/compiler/dart2js/compiler_helper.dart
diff --git a/dart/tests/compiler/dart2js/compiler_helper.dart b/dart/tests/compiler/dart2js/compiler_helper.dart
index 19dfca082efb20d781416a33cb87545faa146f8d..bf2fa672b65e62ac7e8c6274a9dcfa774f4ea3da 100644
--- a/dart/tests/compiler/dart2js/compiler_helper.dart
+++ b/dart/tests/compiler/dart2js/compiler_helper.dart
@@ -24,15 +24,10 @@ String compile(String code, [String entry = 'main']) {
   return generated;
 }
 
-MockCompiler compilerFor(String code, Uri uri) {
-  MockCompiler compiler = new MockCompiler();
-  compiler.sourceFiles[uri.toString()] = new SourceFile(uri.toString(), code);
-  return compiler;
-}
-
 String compileAll(String code) {
+  MockCompiler compiler = new MockCompiler();
   Uri uri = new Uri.fromComponents(scheme: 'source');
-  Compiler compiler = compilerFor(code, uri);
+  compiler.sourceFiles[uri.toString()] = new SourceFile(uri.toString(), code);
   compiler.runCompiler(uri);
   return compiler.assembledCode;
 }