dirstate: drop unused condition in `from_p2`
This conditional was added (by me) tentatively because "it seemed more
correct", but it is not used anywhere yet, and it is missing from the C and the
Rust implementation. So it seems more consistent to drop it for now.
This effectively backout f94cc63df859c
Differential Revision: https://phab.mercurial-scm.org/D11510
#require test-repo execbit
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "`dirname "$TESTDIR"`"
look for python scripts without the execute bit
$ testrepohg files 'set:**.py and not exec() and grep(r"^#!.*?python")'
[1]
look for python scripts with execute bit but not shebang
$ testrepohg files 'set:**.py and exec() and not grep(r"^#!.*?python")'
[1]
look for shell scripts with execute bit but not shebang
$ testrepohg files 'set:**.sh and exec() and not grep(r"^#!.*(ba)?sh")'
[1]
look for non scripts with no shebang
$ testrepohg files 'set:exec() and not **.sh and not **.py and not grep(r"^#!")'
[1]