tests: remove bundle2 activation from test-tags.t
This is an old config that predate bundle2 on by default. This should have been
remove after Mercurail 3.6 got released.
%include map-cmdline.default
changeset = '{cset}{branches}{bookmarks}{tags}{lphase}{parents}{user}{ldate}{summary}\n'
changeset_verbose = '{cset}{branches}{bookmarks}{tags}{lphase}{parents}{user}{ldate}{lfiles}{lfile_copies_switch}{description}\n'