remove support for targeting openbsd 2 or 3
contrib/ChangeLog:
2016-06-21 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* config-list.mk: Stop testing openbsd3.0.
libgcc/ChangeLog:
2016-06-21 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* config.host: Remove support for openbsd 2 and 3.
gcc/ChangeLog:
2016-06-21 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* config.gcc: Remove support for openbsd 2 and 3.
* config/openbsd-oldgas.h: Remove.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237661 138bc75d-0d04-0410-961f-82ee72b054a4