remove Debian5 from build platforms for the master branch. LIGO says they don't need it anymore.
remove Debian5 from build platforms for the master branch. LIGO says they don't need it anymore.

djw8605/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,djw8605/htcondor,djw8605/htcondor,zhangzhehust/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,djw8605/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,djw8605/htcondor,neurodebian/htcondor,djw8605/htcondor,djw8605/htcondor,djw8605/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,htcondor/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,djw8605/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,htcondor/htcondor