A function can be deleted in the console .
Deleting Function in Console
1. Log in to the SCF Console and select "Function Service" on the left sidebar. 2. Select the region for which to view functions at the top. In the function list, you can view all the functions in the specified region.
3. On the list page, click Delete in the "Operation" column on the right of the function you want to delete and then click OK to delete it.