MAPREDUCE-2965. Fixed two FindBugs warnings in the previous commit.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1172214 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/ApplicationAttemptId.java

@@ -38,9 +38,6 @@ import org.apache.hadoop.classification.InterfaceStability.Unstable;
 public abstract class ApplicationAttemptId implements
     Comparable<ApplicationAttemptId> {
   
-  int id;
-  ApplicationId appId;
-  
   /**
    * Get the <code>ApplicationId</code> of the <code>ApplicationAttempId</code>. 
    * @return <code>ApplicationId</code> of the <code>ApplicationAttempId</code>