Removed client interface

spec/InfluxDB/ClientSpec.php

@@ -16,11 +16,6 @@ class ClientSpec extends ObjectBehavior
         $this->shouldHaveType('InfluxDB\Client');
     }
 
-    function it_should_implement_client_interface()
-    {
-        $this->shouldImplement("InfluxDB\ClientInterface");
-    }
-
     function it_should_send_data(\InfluxDB\Adapter\AdapterInterface $adapter)
     {
         $adapter->send([[

src/InfluxDB/Client.php

@@ -2,7 +2,7 @@
 
 namespace InfluxDB;
 
-class Client implements ClientInterface
+class Client
 {
     private $adapter;