Remove superfluous method

core/src/main/java/org/elasticsearch/cluster/routing/allocation/allocator/BalancedShardsAllocator.java

@@ -259,14 +259,6 @@ public class BalancedShardsAllocator extends AbstractComponent implements Shards
             return avgShardsPerNode;
         }
 
-        /**
-         * Returns the global average of primaries per node
-         */
-        public float avgPrimariesPerNode() {
-            return ((float) metaData.numberOfShards()) / nodes.size();
-        }
-
-
         /**
          * Returns a new {@link NodeSorter} that sorts the nodes based on their
          * current weight with respect to the index passed to the sorter. The