Merge pull request #95 from st-tech/revert-94-feature/fix_graalJs_retry_for_multi_thread

Revert "アラート対応：GraalJSエラー時にリトライ（Multi threaded access requested〜）"

Author: hnarimiya

digdag-core/src/main/java/io/digdag/core/agent/GraalJsEngine.java

@@ -135,7 +135,7 @@ public String evaluate(String code, Config scopedParams, ObjectMapper jsonMapper
                  *  To avoid it, create new engine and retry.
                  */
                 String message = e.getMessage();
-                if ("Engine is already closed.".equals(message) || "The Context is already closed.".equals(message) || message.startsWith("Multi threaded access requested")) {
+                if ("Engine is already closed.".equals(message) || "The Context is already closed.".equals(message)) {
                     logger.warn("Retry with new engine. Because: {}", message);
                     return new GraalEvaluator(createContextSupplier(Optional.empty(), params, libraryJsSources)
                             , extendedSyntax).evaluate(code, scopedParams, jsonMapper);