It's not so much removing nodes, but rearranging the nodes to respond correctly to the Superfly render engine.  As Rokket stated, node connections in the Material Room may not be optimal for Superfly, seeing that the content you purchased is dated and Firefly optimized only.  I think that the SkinEdit for Poser 12 is a fine product, however, I believe that it is solely restricted to the PoserSurface root connection and it doesn't take advantage of the PhysicalSurface and Cycles nodes.  So, you have 3 options for setting up Superfly renders, it's just determining which option works best for you.  And without seeing what nodes were used for the Tears content, it is difficult to determine how to approach the problem.