Top Mount Brake Levers

[ezdoesit]

Hello,
I have top mount brake lever tektro RL 570 on my Fuji Touring bike and would like to take off these brake levers.
In order to remove them.
Do I have to get new brake cables to remove the brake levers ?
Or can I take them off and not have to get new cables ?
I thank you for your time and help.
I like doing most of my own work and would appreciate your help.

[cyclerUK]

You should be able to retain the inner wire but chances are the outers will need replacing.
The outer is parted either side of the Tektro lever.