Revert of Release streamed script resources after it was compiled

src/background-parsing-task.h

Index: src/background-parsing-task.h
diff --git a/src/background-parsing-task.h b/src/background-parsing-task.h
index 54ea6d97a951edf9b18fb61b6d20c1b68779afe0..bd96ee1f857b46f5b736930b8a9d683342f3a998 100644
--- a/src/background-parsing-task.h
+++ b/src/background-parsing-task.h
@@ -25,14 +25,6 @@
   StreamedSource(ScriptCompiler::ExternalSourceStream* source_stream,
                  ScriptCompiler::StreamedSource::Encoding encoding)
       : source_stream(source_stream), encoding(encoding) {}
-
-  void Release() {
-    parser.reset();
-    info.reset();
-    zone.reset();
-    cached_data.reset();
-    source_stream.reset();
-  }
 
   // Internal implementation of v8::ScriptCompiler::StreamedSource.
   std::unique_ptr<ScriptCompiler::ExternalSourceStream> source_stream;