actually remove whitespace

Author: Supplementing

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/security/authz/store/ReservedRolesStoreTests.java

@@ -4305,5 +4305,4 @@ private IndexAbstraction mockIndexAbstraction(String name) {
         );
         return mock;
     }
-
 }