In VTiger 7, You can Remove Modules for related module list. This feature helps user to remove the unwanted modules from the related module list to keep it small and simple.
How to Remove Certain Modules from Related Module List
Go to the “Menu” and select “CRM Settings“
Under “Module Management” select “Module Layout And Fields“. Select the “Module” and click on the “Relationship” tab and than you can remove the relationship of the module by clicking on the “X” sign on the right side. You can also rearrange the by using drag and drop.
You can also add the “Module” again after deleting it.