The Excel tools can be used to remove links from components.

In order to do so, put the {clean} keyword in the desired SubColumn. All the links matching the direction, the sourceSlot and the target slot indicated in the third row will be removed

In the example below, all the links with an "out" sourceSlot and a "setpoint" target Slot will be removed from the component in the row

Links
Define link endpoint and slots
outLink:out:setpoint
{clean}

You can put the {clean} keyword with other values separated with a semicolon. It will clean the links existing before the import (it won't remove a link created in the current import).