Revert "adjustment to help it compile ... still does not work"

This reverts commit e96475f3bb223af14b8ca63fad3d0ae4bb7d2778.
Revert "libreswan 05de145b00 Make the nss crypto library mandatory"

This reverts commit 01b0c8e85f885a76eda89d86cbec43a89ea7a306.