Delete empty line

Author: zymap

bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Bookie.java

@@ -627,7 +627,6 @@ private static LedgerStorage buildLedgerStorage(ServerConfiguration conf) throws
      */
     public static LedgerStorage mountLedgerStorageOffline(ServerConfiguration conf, LedgerStorage ledgerStorage)
             throws IOException {
-
         StatsLogger statsLogger = NullStatsLogger.INSTANCE;
         DiskChecker diskChecker = new DiskChecker(conf.getDiskUsageThreshold(), conf.getDiskUsageWarnThreshold());