core/blockchain: downgrade tx indexing and unindexing logs (#25832)

core/blockchain: downgrade tx indexing and unindexing logs from info to debug

If a user has a finite tx lookup limit, they will see an "unindexing" info level log each time a block is imported. This information might help a user understand that they are removing the index each block and some txs may not be retrievable by hash, but overall it is generally more of a nuisance than a benefit. This change downgrades the log to a debug log.

core/rawdb/chain_iterator.go

@@ -243,7 +243,7 @@ func indexTransactions(db ethdb.Database, from uint64, to uint64, interrupt chan
 	case <-interrupt:
 		log.Debug("Transaction indexing interrupted", "blocks", blocks, "txs", txs, "tail", lastNum, "elapsed", common.PrettyDuration(time.Since(start)))
 	default:
-		log.Info("Indexed transactions", "blocks", blocks, "txs", txs, "tail", lastNum, "elapsed", common.PrettyDuration(time.Since(start)))
+		log.Debug("Indexed transactions", "blocks", blocks, "txs", txs, "tail", lastNum, "elapsed", common.PrettyDuration(time.Since(start)))
 	}
 }
 
@@ -335,7 +335,7 @@ func unindexTransactions(db ethdb.Database, from uint64, to uint64, interrupt ch
 	case <-interrupt:
 		log.Debug("Transaction unindexing interrupted", "blocks", blocks, "txs", txs, "tail", to, "elapsed", common.PrettyDuration(time.Since(start)))
 	default:
-		log.Info("Unindexed transactions", "blocks", blocks, "txs", txs, "tail", to, "elapsed", common.PrettyDuration(time.Since(start)))
+		log.Debug("Unindexed transactions", "blocks", blocks, "txs", txs, "tail", to, "elapsed", common.PrettyDuration(time.Since(start)))
 	}
 }