add test

Author: epugh

solr/core/src/test/org/apache/solr/cloud/DeleteCoreRemnantsOnCreateTest.java

@@ -256,5 +256,4 @@ private Replica getReplicaOnNode(String collectionName, String shard, String nod
     return replica.orElseThrow(
         () -> new AssertionError("No replica found on node " + nodeName + " for " + shard));
   }
-
 }