Fix bad javadoc causing Travis deployment failure (#337)

Author: efeg

src/main/java/com/linkedin/xinfra/monitor/services/metrics/CommitLatencyMetrics.java

@@ -61,7 +61,6 @@ public CommitLatencyMetrics(Metrics metrics, Map<String, String> tags, int laten
 
   /**
    * start the recording of consumer offset commit
-   * @throws Exception if the offset commit is already in progress.
    */
   public void recordCommitStart() {
     if (!_inProgressCommit) {