I would like to remove wifi from my Zero... dont need it. The device will not be used network connected.
It will serve as an OTG usb dongle only.

How to remove or reinstall all wifi related components?

It would be also great how to enable / disable ethernet connection from command line... is it just
nmcli network off    /      nmcli network on
or is there a more efficient way to do it?

If you use Mainline, then simply remove the whole xradio paragraph in DT.

... I am not not sure what you mean...?
I removed xradio from the /etc/modules

#gpio_sunxi
#w1-sunxi
#w1-gpio
#w1-therm
#sunxi-cir
xradio_wlan
xradio_wlan

Is that make the trick? I also see that there have been two lines with xradio... I wonder why. /R

 

That is also another solution ...

So, I did the change in the /etc/modules  ,and checked that the modules are not loaded with the command "less /proc/modules"

and I also set "h3consumption wifi-hw off"

Strangely after the reboot when I do 
"nmcli radio"
WIFI-HW  WIFI      WWAN-HW  WWAN    
enabled  disabled  enabled  enabled 
 

It shows basicly wifi-hw enabled...., but at the same time if I run
 

h3consumption -p
...all wifi related data is gone from the printout.

So... is it on or off?... Or only partly initiated?