Look for the "Project Sweeper" group of tools under the "Add-Ins" tab.

1. Press the tool button that matches the type of style\pattern you want to remove.
2. Select which styles\patterns should be removed and what should be done with elements using the style\pattern.
3. Press OK to commit changes back to Revit.

The help document has detailed instructions.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin.

You may need to restart the Autodesk product to activate the app/plug-in.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8/8.1/10) and uninstall as you would any other application from your system.

1. The Line Pattern Cleaner does not check view specific overrides. If any elements, categories or filters in a view have been overridden and that line pattern is removed by LPC, it will revert back to <By Object Style>.
2. The Fill Pattern Cleaner does not check view specific overrides. If any elements, categories or filters in a view have been overridden and that line pattern is removed by FPC, it will revert back to <By Material>.