Do not warn on single value high memory usage

(Use built-in monitors to monitor *average* recent use instead)

grails-app/services/io/xh/hoist/admin/MemoryMonitoringService.groovy

@@ -91,7 +91,7 @@ class MemoryMonitoringService extends BaseService {
             _lastInfoLogged = new Date()
         } else {
             logDebug(newSnap)
-       }
+        }
 
         return newSnap
     }