Siemens SCALANCE W770 Series Configuration Manuals page 449

Syntax
Call the command without parameters:
no ssh-server
Result
The SSH protocol is disabled on the device.
Further notes
You enable the SSH protocol with the ssh-server command.
SCALANCE W770/W730 acc. to IEEE 802.11n Command Line Interface
Configuration Manual, 09/2017, C79000-G8976-C324-08
Network protocols
8.11 SSH server
449