Matomo 4.0.0 warns about "ExampleTheme requires Piwik <4.0.0-b1" #16804

I just upgraded from Matomo 3.14.1 to 4.0.0 (installed and updated via DirectAdmin and Installatron) and started getting various System Check warnings.

Settings	System Check	System Check / Informational

Attached:
matomo_system_check.txt

The issue about ExampleTheme seems like a bug, and is what I'm reporting. I'm not aware of having installed anything by that name and suspect it may've been something that went wrong in the packaging of the release or something?

Thanks for creating this issue and letting us know @Krinkle I've created a PR that should remove this plugin in the next update. Basically plugins/ExampleTheme needs to be removed.

@tsteur Does the same apply to the other ones in the plugins folder?

ExampleAPI
ExampleCommand
ExampleLogTables
ExamplePlugin
ExampleReport
ExampleSettingsPlugin
ExampleTheme
ExampleTracker
ExampleUI
ExampleVisualization

Hi @Krinkle yes you could remove these other plugins as well