Uninstall Nautilus-Elementary – Step-by-Step Guide

I just went through the same procedure as you and I did so by following the LO FAQ post on uninstalling previous version of community supplied packages.

The steps outlined in the FAQ require Synaptic Package Manager. You can install it with:

sudo apt-get install synaptic

From the FAQ:

Once you have ensured that Synaptic is installed on your system, proceed as follows to de-install an existing installation of LibreOffice:

1. Launch the Synaptic Package Manager.

2. Click in the Search box.

3. Enter the string “libreoffice”. You may need to click on the “Search Results” button before you see this filtering string applied.

4. This search will display a list of matching packages. In this list, there will be one package named simply “libreoffice3”. Right-click on that package name and, in the context-sensitive menu that opens, choose “Mark for Complete Removal”.

You will be prompted to accept the marking of a number of additional changes. Accept these additional changes.

In the packages list, scroll down until you see the first package that is not yet marked for removal. Right-click on that package name and, in the context-sensitive menu that opens, choose “Mark for Complete Removal”.

Do the same for the next package. You will be prompted to accept the marking of a number of additional changes. Accept these additional changes.

Continue right down to the bottom of the list and mark every single listed package for complete removal.

There's a way to remove all packages installed through a ppa and restore the original ones.

1. sudo apt-get install ppa-purge

2. sudo ppa-purge ppa:elementary-os/daily

   If daily was installed

   or

sudo ppa-purge ppa:/elementary-os/stable

If elementary os stable was installed.

That's it.