remotefilelog: drop compat code for "getbundle_shallow" wireprotocol command Doing some annotate on hgexperimental shows that getbundle_shallow used to exist in 2013 or before. We don't have any pre-2013 remotefilelog users except Fb themselves and I doubt they are going to use in-core remotefilelog. So it's safe to remove this. Differential Revision: https://phab.mercurial-scm.org/D5193