Re: [PATCH 3/4] refs: drop force_create argument of create_reflog API

"Han-Wen Nienhuys via GitGitGadget" [off-list ref] writes:

From: Han-Wen Nienhuys <redacted>

There is only one caller, builtin/checkout.c, and it hardcodes
force_create=1.

This dates back to abd0cd3a (refs: new public ref function:
safe_create_reflog, 2015-07-21) and it seems that we never acquired
the second caller to this helper.

Makes sense.