Remove double call to elect primaries

There is no need to call the elect logic twice, we used to need it, but no longer since we handle dangling replicas for unassigned primaries properly

core/src/main/java/org/elasticsearch/cluster/routing/allocation/AllocationService.java

@@ -175,8 +175,6 @@ public class AllocationService extends AbstractComponent {
         // now allocate all the unassigned to available nodes
         if (allocation.routingNodes().hasUnassigned()) {
             changed |= shardsAllocators.allocateUnassigned(allocation);
-            // elect primaries again, in case this is needed with unassigned allocation
-            changed |= electPrimariesAndUnassignedDanglingReplicas(allocation);
         }
 
         // move shards that no longer can be allocated