dirstate-map: do not use `size` to gate copy dropping during remove_file...
dirstate-map: do not use `size` to gate copy dropping during remove_file
This get us close to moving the block right above withing the DirstateItem
object. Doing so will help us getting rid of magic constant at the dirstatemap
level.
Differential Revision:
https://phab.mercurial-scm.org/D11127