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.
.......
I just posted examples and what GitHub or your IDE does automatically is irrelevant. It is still your responsibility to not violate license agreements. It's as simply as that.