The reason might be that in "/lib/modules/4.4.0-73-generic/kernel/drivers/net" there is no folder "wireless" at all.
In "/lib/modules/4.4.0-73-generic/kernel/drivers/net/wireless" there is the folder "realtek" with all the needed (but unfortunately not correctly working) drivers.
How do I get back the realtek wireless drivers with 4.4.0-73.94?
The reason might be that in "/lib/modules/ 4.4.0-73- generic/ kernel/ drivers/ net" there is no folder "wireless" at all.
In "/lib/modules/ 4.4.0-73- generic/ kernel/ drivers/ net/wireless" there is the folder "realtek" with all the needed (but unfortunately not correctly working) drivers.
How do I get back the realtek wireless drivers with 4.4.0-73.94?