Apache2 Raspberry Pi Setup

[RazorzEdGe]

I was trying to setup my Pi to be able to write to the document root folder of the apache2 server through SMB when using my Windows machine following this guide https://support.rackspace.com/how-to/ho ... rmissions/ and I want to revert back and undo these commands but I am having trouble doing so. Does anybody know how I could reverse the commands that I used below?:

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sudo usermod -a -G www-data pi

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sudo chgrp -R www-data /var/www

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sudo chmod -R g+w /var/www

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sudo chmod g+s /var/www

I've already removed "pi" from the group

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sudo deluser pi www-data