How to forget (remove/delete) these saved O2 Wifi networks?

[idkwho]

Hi I am having a lot of trouble with trying to remove these four O2 Wifi networks from my Samsung Galaxy Tab S4 Tablet (WiFi only version). 

I have tried: Reset network settings and Factory data reset but these saved networks remain on my device.

There are four saved networks:

O2 Wifi

O2 Wifi. 1x

Wifi Extra 

Wifi+

The problem I have is that there is no forget button to remove these Wifi networks as can be seen in these screenshots:

[MI5]

I can't remember what the app will do but I seem to recall it wasn't much use!

[idkwho]

So presuming the tablet has connected to O2 Wifi at some point there must have been an app that would install all four of the networks unless just connecting to O2 Wifi would install O2 Wifi. 1x, Wifi Extra and Wifi+?

[liggerz87]

I know this is different but I have s9+ from o2 if never connected to o2 wifi but my phone connected automatically and it worked and I was like wtf but best thing you could do is send the tablet to samsung

[MI5]

They would be part of the wifi profile that got installed when connecting to a hotspot.

[idkwho]

Does it give you an option to forget the saved network while connected to it?

[MI5]

No, I don't think it does.
The ones that have "eap" are locked into an account profile too.

[idkwho]

I see so whoever used the device connected to O2 Wifi and signed into their account on it. What does deleting the device from the account do? Does it delete the saved networks?

[MI5]

Not something I've tried but I would guess it would delete the profile off the device too.

[idkwho]

Do you know if I would be able to use O2 Wifi on the device if someone has already used it previously? Would I be able to sign up as usual and delete the profile whilst connected to the O2 wifi in an attempt to remove these saved networks?

[MI5]

O2 wifi remembers the MAC address of the device so you would be able to use it just fine.