bookmarks: backout the attempt to fix the delete race
This backs out
044045dce23a because it broke a bunch of tests on Windows.
Yuya's theory is that we still rely on in-memory changelog data to be flushed
out of the transaction.
Our full contribution guidelines are in our wiki, please see:
https://www.mercurial-scm.org/wiki/ContributingChanges
If you just want a checklist to follow, you can go straight to
https://www.mercurial-scm.org/wiki/ContributingChanges#Submission_checklist
If you can't run the entire testsuite for some reason (it can be
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273ce12ad8f1` will report some style violations on a very old commit).