largefiles: remove redundant "updatelfiles" invocation in "lfilesrepo.commit"
After previous patches, largefiles in the working directory are
ensured to be updated before "repo.commit" invocation for automated
committing below:
- by "overrides.mergeupdate" via "merge.update" for rebase
- by "overrides.scmutilmarktouched" via "patch.patch" for transplant
This patch removes redundant "lfcommands.updatelfiles" invocation in
"Case 0" code path of "lfilesrepo.commit" for automated committing,
and revises detailed comment.
Testing that hghave does not crash when checking features
$ "$TESTDIR/hghave" --test-features 2>/dev/null