To delete the existing switch configuration and go from SmartFabric mode back to Full Switch mode, run the following commands on each switch:
Leaf1A# configure terminal
Leaf1A(config)# no smartfabric l3fabric
Reboot to change the personality? [yes/no]:y
The switch reboots into Full Switch mode. The mode can be verified with the following command:
OS10# show switch-operating-mode
Switch-Operating-Mode : Full Switch Mode