view .arcconfig @ 40853:d7e44da4dc70

shelve: drop unnecessary backup of dirstate for phase-based case

Regular shelve has a hack using an uncommitted transaction that's then
aborted at the end of the operation. It preserves the dirstate across
the abort, however, by saving a backup copy of it. Phase-based shelve
instead commits the transaction, so the hack shouldn't be necessary
there.

Differential Revision: https://phab.mercurial-scm.org/D5389

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