Applied fixes from StyleCI

Behavioral/Mediator/Mediator.php

@@ -2,15 +2,12 @@
 
 namespace DesignPatterns\Behavioral\Mediator;
 
-use DesignPatterns\Behavioral\Mediator\Subsystem;
-
 /**
  * Mediator is the concrete Mediator for this design pattern.
  * In this example, I have made a "Hello World" with the Mediator Pattern.
  */
 class Mediator implements MediatorInterface
 {
-
     /**
      * @var Subsystem\Server
      */
@@ -39,7 +36,7 @@ class Mediator implements MediatorInterface
     }
 
     /**
-     * make request
+     * make request.
      */
     public function makeRequest()
     {
@@ -47,7 +44,8 @@ class Mediator implements MediatorInterface
     }
 
     /**
-     * query db
+     * query db.
+     *
      * @return mixed
      */
     public function queryDb()
@@ -56,7 +54,7 @@ class Mediator implements MediatorInterface
     }
 
     /**
-     * send response
+     * send response.
      *
      * @param string $content
      */