remotefilelog: remove some BC code related to streamclone
Since remotefilelog is now moved to core and we have
streamclone._walkstreamfiles() in core, we don't need to have the backward
compatibility code.
People with old mercurial version should use remotefilelog from hg-experimental
repo as IMO remotefilelog will go under a good refactoring and old clients will
break.
# no-check-commit foo_bar function name
Differential Revision: https://phab.mercurial-scm.org/D5189
$ hg init
$ touch unknown
$ touch a
$ hg add a
$ hg ci -m "1"
$ touch b
$ hg add b
$ hg ci -m "2"
Should show unknown
$ hg status
? unknown
$ hg revert -r 0 --all
removing b
Should show unknown and b removed
$ hg status
R b
? unknown
Should show a and unknown
$ ls
a
unknown