extensions: remove the inotify extension (BC)
This extension has always had correctness issues and has been
unmaintained for years. It is now removed in favor of the third-party
hgwatchman which is maintained and appears to be correct.
Users with inotify enabled in their config files will fall back to
standard status performance.
$ "$TESTDIR/hghave" execbit || exit 80
$ 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 ..