Revert "Add stack trace to start of pruning debug log to debug source of multiple calls per expected call"

This reverts commit c197b1e.

Author: Matilda-Clerke

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/chain/ChainDataPruner.java

@@ -113,12 +113,6 @@ private void chainPrunerAction(final BlockAddedEvent event) {
   }
 
   private void preMergePruningAction() {
-    StringBuilder sb = new StringBuilder();
-    for (StackTraceElement element : Thread.currentThread().getStackTrace()) {
-      sb.append(element.toString());
-      sb.append("\n");
-    }
-    final String originatingStackTrace = sb.toString();
     pruningExecutor.submit(
         () -> {
           try {
@@ -127,10 +121,7 @@ private void preMergePruningAction() {
             final long expectedNewPruningMark =
                 Math.min(storedPruningMark + pruningQuantity, mergeBlock);
             LOG.debug(
-                "Attempting to prune blocks {} to {}. Started from \n{}",
-                storedPruningMark,
-                expectedNewPruningMark,
-                originatingStackTrace);
+                "Attempting to prune blocks {} to {}", storedPruningMark, expectedNewPruningMark);
             final KeyValueStorageTransaction pruningTransaction = prunerStorage.startTransaction();
             final BlockchainStorage.Updater updater = blockchainStorage.updater();
             for (long blockNumber = storedPruningMark;