filelog: stop proxying checksize() (API)...
filelog: stop proxying checksize() (API)
This was only used by verify code. And the check using it is now
implemented as part of verifyintegrity(). The method is unused
and is revlog-centric, which means it isn't appropriate for the file
storage interface. So remove it.
Differential Revision:
https://phab.mercurial-scm.org/D4703