Bug#994182: headset functionality broken after recent update

[debian-bugs]

Back to pulseaudio and following

 > https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/1247

first answer by Igor Kovalenko
I edited

/etc/pulse/default.pa

to match

load-module module-bluetooth-discover enable_native_hfp_hf=false

and with that parameter (enable_native_hfp_hf=false) things are back to 
normal.
Couldn't find out what the equivalent setting for pipewire would be, 
that's why I went back to pulse.

Positive side effect: ofono seems not to be necessary anymore.