Deleting Hardware files leads sometimes to brick the phone
I'm using a samsung galaxy s8 with Android 9 Pie
Model: SM-G950F
Update:

I found a way to disable the following hardware:
(disclaimer: there is probably tons of methods to permanently disable hardware, but this is how it worked for me)
Ofc you need to root you device, I used TWRP as boot loader.
MAKE A BACKUP OF YOUR DEVICE
you could loose your data forever!! and dont do the same mistake I did, not backing up the contacts.
Contacts are NOT in the internal storage, therefore you need to do a back up while rooted!!!
Tip: every file you edit or delete, make a backup of the original one and name it differently. If your android bricked, then you can use TWRP and delete the modified file and rename the backup again to the original name. This would help you to prevent wasting much time.
Bluetooth:
Delete the following file:
/system/vendor/lib64/hw/android.hardware.bluetooth@1.0-impl.so
WiFi:
Delete the following file:
/system/vendor/lib64/vendor.samsung.frameworks.ucm.wifi@1.0.so
GPS:
Delete the following file:
/system/vendor/etc/gnss/gps.xml
Some files I just edited them, these are permissions file, if you delete them completely, android wont work anymore.
You need to delete everything between &lt;permissions&gt;&lt;/permissions&gt;
You can edit the files using text editor
GPS:
Edit the following file:
/system/vendor/etc/permissions/android.hardware.location.gps.xml
NFC:
Edit the following file:
/system/vendor/etc/permissions/android.hardware.nfc.xml
Telephony:
I tried to dial emergency numbers, which should be actually possible with or without a sim card, but it didnt work.
Edit the following file:
/system/vendor/etc/permissions/android.hardware.telephony.gsm.xml
And that's it, now just restart your android and it should work with no problems.
I would recommend to download everything you want to have on your phone, before you get rid of wifi.
WARNING:
Most google applications like google map wont work, after you get rid of the gnss/gps. Google doesnt like it, if you turn off your location lol
The network data (LTE, 4G ...etc) is not tested and I am not sure if it is even disabled, I have the feeling that Telephony is not the same. I dont use a sim card anyways, so yeah. But if I found out a solution for that too, I will post it here for sure!
have fun!!