Ok, got it. But still....

preservation of copyright and license notices

You removed ALL copyright notices.

https://github.com/bencagri/artisan-deployer/blob/master/LICENSE#L3

https://github.com/EasyCorp/easy-deploy-bundle/blob/master/src/Command/DeployCommand.php#L6

https://github.com/EasyCorp/easy-deploy-bundle/blob/master/src/Command/RollbackCommand.php#L6

https://github.com/EasyCorp/easy-deploy-bundle/blob/master/composer.json#L8

https://github.com/bencagri/artisan-deployer/blob/master/composer.json#L8

and so on and so forth...

Removing ALL references to the original author and making not a single note about the original repository (at least not before our moderator found the original) IS plagiarism. Intentionally or not, does not matter.