Considering that in VegaFEM v4.0, pthreads was replaced with
Intel TBB, this commit removes the references to "pthread" and
also removes the corresponding custom CMake module.

See http://barbic.usc.edu/vega/download.html

Sreekanth Arikatla authored 6 years ago and Jean-Christophe Fillion-Robin committed 3 years ago

Remove all the extra files that are not code