The lashes are probably still showing up in Poser because, although you removed them from the base .obj, Poser is reading the geometry from the binary .rsr. Unless you're very familiar with the inner workings of Poser files and character creation, I do not recommend that you delete the lashes. If you remove them from the mesh, you'll change the vertex count of the head, which will make all of Posette's head morphs unusable, in addition to other problems that might occur due to their absence. A better solution is to make the lashes completely transparent, as you have done, or use a no-lashes morph to hide the lashes. Unfortunately, the Lashes morph built into Posette, which is intended to adjust lash length, doesn't do a good job of hiding the lashes, even at a value of -1. If you have Traveler's MorphWorld CD, you'll find a no-lash morph buried somewhere inside.