HDFS-15803. EC: Remove unnecessary method (getWeight) in StripedReconstructionInfo. Contributed by huhaiyang

(cherry picked from commit 66ecee333e)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedReconstructionInfo.java

@@ -104,19 +104,5 @@ String[] getTargetStorageIds() {
     return targetStorageIds;
   }
 
-  /**
-   * Return the weight of this EC reconstruction task.
-   *
-   * DN uses it to coordinate with NN to adjust the speed of scheduling the
-   * reconstructions tasks to this DN.
-   *
-   * @return the weight of this reconstruction task.
-   * @see HDFS-12044
-   */
-  int getWeight() {
-    // See HDFS-12044. The weight of a RS(n, k) is calculated by the network
-    // connections it opens.
-    return sources.length + targets.length;
-  }
 }