I don't know what version of Solution Manager you are using, but you do have an option to disable the button to create TOC on the CRM UI, and also if you don't want to use it during the "Pass normal change to test" step, don't use it in the standard way action/status is delivered. You can customize the workflow.
In the older version (by older I mean Solman 7.0 EHP1), you just need to disable/deactivate the create TOC action.
it is a simple process to disable TOCs, Let us know what exactly are you looking for.
Regards,
Sneha.