The glucose UI only converts canonical mg/dL into mmol/L for display
via convertGlucose; the reverse helper had no caller outside its own
test. The Berlin-only day-key helper was already superseded by
userDayKey(date, tz) in v1.4.38 for every read path that consumed it;
its remaining presence as a tested module was dead weight.
Marc-André Bombeck
f3a4da50f6