Remove grid-deployment repository, HEP_OSlibs should be provided by wlcg repo

Seems to be working fine. Still need to check if the files are identical or not to confirm we're not breaking anything.

slc5-cms/Dockerfile

@@ -48,8 +48,6 @@ RUN     wget http://repository.egi.eu/sw/production/cas/1/current/repo-files/EGI
         mv wlcg-sl5.repo /etc/yum.repos.d/ && \
         wget http://linuxsoft.cern.ch/wlcg/RPM-GPG-KEY-wlcg && \
         mv RPM-GPG-KEY-wlcg /etc/pki/rpm-gpg/ && \
-        wget http://grid-deployment.web.cern.ch/grid-deployment/download/HEP/repo/HEP_OSlibs.repo && \
-        mv HEP_OSlibs.repo /etc/yum.repos.d/ && \
         yum install -y HEP_OSlibs_SL5 ca-policy-lcg ca-policy-egi-core wlcg-repo.noarch wlcg-voms-cms && \
         yum clean -y all