delete unused method

Author: duncanmcclean

src/Console/Commands/PurgeCartOrdersCommand.php

@@ -30,10 +30,4 @@ public function handle()
                 });
             });
     }
-
-    protected function isOrExtendsClass(string $class, string $classToCheckAgainst): bool
-    {
-        return is_subclass_of($class, $classToCheckAgainst)
-            || $class === $classToCheckAgainst;
-    }
 }