[Java] Fix JNI link error caused by the removal of options.db_stats_log_interval

Summary: Fix JNI link error caused by the removal of options.db_stats_log_interval in https://reviews.facebook.net/D21915.

Test Plan:
make rocksdbjava
make jtest

Reviewers: ljin, ankgup87

Reviewed By: ankgup87

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D23505

Author: yhchiang

java/org/rocksdb/Options.java

@@ -305,40 +305,6 @@ public Options setUseFsync(boolean useFsync) {
   }
   private native void setUseFsync(long handle, boolean useFsync);
 
-  /**
-   * The time interval in seconds between each two consecutive stats logs.
-   * This number controls how often a new scribe log about
-   * db deploy stats is written out.
-   * -1 indicates no logging at all.
-   *
-   * @return the time interval in seconds between each two consecutive
-   *     stats logs.
-   */
-  public int dbStatsLogInterval() {
-    assert(isInitialized());
-    return dbStatsLogInterval(nativeHandle_);
-  }
-  private native int dbStatsLogInterval(long handle);
-
-  /**
-   * The time interval in seconds between each two consecutive stats logs.
-   * This number controls how often a new scribe log about
-   * db deploy stats is written out.
-   * -1 indicates no logging at all.
-   * Default value is 1800 (half an hour).
-   *
-   * @param dbStatsLogInterval the time interval in seconds between each
-   *     two consecutive stats logs.
-   * @return the reference to the current option.
-   */
-  public Options setDbStatsLogInterval(int dbStatsLogInterval) {
-    assert(isInitialized());
-    setDbStatsLogInterval(nativeHandle_, dbStatsLogInterval);
-    return this;
-  }
-  private native void setDbStatsLogInterval(
-      long handle, int dbStatsLogInterval);
-
   /**
    * Returns the directory of info log.
    *

java/org/rocksdb/test/OptionsTest.java

@@ -52,12 +52,6 @@ public static void main(String[] args) {
       assert(opt.useFsync() == boolValue);
     }
 
-    { // DbStatsLogInterval test
-      int intValue = rand.nextInt();
-      opt.setDbStatsLogInterval(intValue);
-      assert(opt.dbStatsLogInterval() == intValue);
-    }
-
     { // DbLogDir test
       String str = "path/to/DbLogDir";
       opt.setDbLogDir(str);