Revert "svm: disable Throwable#getOurStackTrace in TruffleFeature"

This reverts commit 27a1cc8.

Author: zapster

substratevm/src/com.oracle.svm.truffle/src/com/oracle/svm/truffle/TruffleFeature.java

@@ -583,7 +583,6 @@ private void initializeMethodBlocklist(MetaAccessProvider metaAccess, FeatureAcc
         blocklistMethod(metaAccess, Throwable.class, "fillInStackTrace");
         // Implementations which don't call Throwable.fillInStackTrace are allowed
         implementationOnlyBlocklist(metaAccess, Throwable.class, "fillInStackTrace");
-        blocklistMethod(metaAccess, Throwable.class, "getOurStackTrace");
         blocklistMethod(metaAccess, Throwable.class, "initCause", Throwable.class);
         blocklistMethod(metaAccess, Throwable.class, "addSuppressed", Throwable.class);
         blocklistMethod(metaAccess, System.class, "getProperty", String.class);