There has been a slow but steady stream of bug reports triggered by the
warning included in ac33519ddfa818f420b4ef5a09b4a7b3ac8adeb8. Since
introducing the escape hatch for Windows 7 in that same patch, however,
I have not seen a single report that pointed to the kind of bug I
anticipated when writing that warning message.
Let's drop this warning, as well as the escape hatch: Git for Windows
dropped supporting Windows 7 (and Windows 8) directly after Git for
Windows v2.46.2. For full details, see
https://gitforwindows.org/requirements#windows-version.
For good measure, let's keep the fall-back, though: It sometimes helps
work around issues (e.g. when Defender still holds a handle on a file
that Git wants to write out).