I have an assembly within Solidworks 2018 that was given to me, that has a few "suppressed" .STP files within the model tree.  I cannot unsurppress them, or delete them. 

I was able to create actual Solidworks from these .STP files and add them into the model but cannot remove the .STP files.  Any ideas on how to either unsurppress them or to delete them out out the model tree?

Thanks in advance! 

B. Morales