Remove empty line

pf4j/src/main/java/org/pf4j/AbstractPluginManager.java

@@ -532,7 +532,6 @@ public abstract class AbstractPluginManager implements PluginManager {
         return extensionClasses;
     }
 
-
     @Override
     public <T> List<Class<? extends T>> getExtensionClasses(Class<T> type) {
         return getExtensionClasses(extensionFinder.find(type));