Inkscape line delete

I ungrouped, went to outline, node mode(F2). Selected the left node of the line then shift-click the second on right. I can move the line but no delete or cut.
I’m trying to delete the lines so I can insert text(name). if I don’t get rid of those horizontals they will cut and I just have top portion and bottom left of my material.
this is the split letter from the Langmuir ‘shares’.
OR
is there simpler way to get the name in the file???
SEIFERT.dxf (1.0 MB)