Comment, remove, or revise many unreferenced labels

engine/overworld/time.asm

@@ -203,7 +203,7 @@ CheckPokerusTick::
 	xor a
 	ret
 
-SetUnusedTwoDayTimer:
+SetUnusedTwoDayTimer: ; unreferenced
 	ld a, 2
 	ld hl, wUnusedTwoDayTimer
 	ld [hl], a
@@ -308,7 +308,7 @@ UpdateTimeRemaining:
 	scf
 	ret
 
-GetSecondsSinceIfLessThan60:
+GetSecondsSinceIfLessThan60: ; unreferenced
 	ld a, [wDaysSince]
 	and a
 	jr nz, GetTimeElapsed_ExceedsUnitLimit
@@ -330,7 +330,7 @@ GetMinutesSinceIfLessThan60:
 	ld a, [wMinutesSince]
 	ret
 
-GetHoursSinceIfLessThan24:
+GetHoursSinceIfLessThan24: ; unreferenced
 	ld a, [wDaysSince]
 	and a
 	jr nz, GetTimeElapsed_ExceedsUnitLimit
@@ -349,7 +349,7 @@ CalcDaysSince:
 	xor a
 	jr _CalcDaysSince
 
-CalcHoursDaysSince:
+CalcHoursDaysSince: ; unreferenced
 	inc hl
 	xor a
 	jr _CalcHoursDaysSince
@@ -423,7 +423,7 @@ CopyDayToHL:
 	ld [hl], a
 	ret
 
-CopyDayHourToHL:
+CopyDayHourToHL: ; unreferenced
 	ld a, [wCurDay]
 	ld [hli], a
 	ldh a, [hHours]