revert: drop special case handling for file unknown in parent
We had a special case for file not caught by any categories. It was
aimed at files missing in wc and wc's parent but existing in the target
revision. This is now properly handled using status information.
#require execbit
$ hg init repo
$ cd repo
$ echo foo > foo
$ chmod 644 foo
$ hg ci -qAm '644'
$ chmod 755 foo
$ hg ci -qAm '755'
reverting to rev 0
$ hg revert -a -r 0
reverting foo
$ hg st
M foo
$ hg diff --git
diff --git a/foo b/foo
old mode 100755
new mode 100644
$ cd ..