Apply fixes from StyleCI

src/Grid/Model.php

@@ -5,7 +5,6 @@ namespace Dcat\Admin\Grid;
 use Dcat\Admin\Admin;
 use Dcat\Admin\Exception\AdminException;
 use Dcat\Admin\Grid;
-use Dcat\Admin\Http\Middleware\Pjax;
 use Dcat\Admin\Repositories\Repository;
 use Illuminate\Contracts\Support\Arrayable;
 use Illuminate\Database\Eloquent\Relations\Relation;

src/Http/Auth/Permission.php

@@ -3,7 +3,6 @@
 namespace Dcat\Admin\Http\Auth;
 
 use Dcat\Admin\Admin;
-use Dcat\Admin\Http\Middleware\Pjax;
 use Dcat\Admin\Layout\Content;
 use Dcat\Admin\Models\Role;
 use Dcat\Admin\Support\Helper;

src/Show/Field.php

@@ -584,7 +584,7 @@ HTML;
             return "<b style='color: {$color}'>$value</b>";
         });
     }
-    
+
     /**
      * Display field as boolean , `✓` for true, and `✗` for false.
      *

src/Support/helpers.php

@@ -582,4 +582,4 @@ if (! function_exists('admin_exit')) {
     {
         Admin::exit($response);
     }
-}
+}