How remove microG of /e/ os?

Well, I’ve tried this way.

The device started as usual.

In the menu “Settings” the entry “MicroG >” is still available - and offers two options to choose from:

⟳ Open app again
▴ Mute until device restarts

Both options lead to the /e/ start screen.

So, now > 6. power off

Now I test with Android Debug Bridge (ADB) …

$ pm list packages|grep -i microg

package:org.microg.nlp.backend.ichnaea
package:org.microg.nlp.backend.nominatim
package:org.microg.gms.droidguard

$

… and I still get 3x org.microg packages.

What is the meaning of these 3 packages for my experiment » /e/ OS without microG? «