Fix code to match PSR-2 style

Author: zzantares

src/AuthToken.php

@@ -129,6 +129,4 @@ public function isValid()
     {
         return $this->timestamp + 7200 >= time();
     }
-
 }
-

src/Credentials.php

@@ -233,6 +233,4 @@ public function parseCustomCredentials($credentials)
             }
         }
     }
-
 }
-

src/Exception/AuthenticationException.php

@@ -18,4 +18,3 @@
 class AuthenticationException extends \RuntimeException
 {
 }
-

src/Proxmox.php

@@ -545,6 +545,4 @@ public function getVersion()
     {
         return $this->get('/version');
     }
-
 }
-