How to Disable Time Table
To control availability of the Time Table feature create the following DWORD registry value:
Set it to 1 to remove the feature or to 0 to keep it. If you want to prohibit your users from manually changing this and other settings protect the HKLM\SOFTWARE\Anuko\World Clock\
Restart World Clock for your change to take effect.
Note: no_time_table flag is available since version 188.8.131.5263.
World Clock FAQ