Our system used Laravel Spark and it started by another developer but left the company. I was asked to clean and remove unwanted table and fields but I think the user table has a lot of 'spark fields'.
Can you point me to any docs where can I get the list of those 'spark fields'.
The migrations registered by the package should be in your vendor folder, most likely in
/vendor/sparkor/vendor/laravel/spark. There should be a directory of migrations that the package ran, which should help you determine what database changes it made.