Replace many '; unused' with '; unreferenced'

engine/overworld/map_setup.asm

@@ -82,7 +82,7 @@ LoadMapObjects:
 	farcall InitializeVisibleSprites
 	ret
 
-; unused
+MapSetup_DummyFunction: ; unreferenced
 	ret
 
 ResetPlayerObjectAction:

engine/overworld/player_movement.asm

@@ -311,7 +311,7 @@ DoPlayerMovement::
 	scf
 	ret
 
-; unused
+.unused ; unreferenced
 	xor a
 	ret
 

engine/overworld/scripting.asm

@@ -2203,7 +2203,8 @@ Script_writeunusedbytebuffer:
 	ld [wUnusedScriptByteBuffer], a
 	ret
 
-	db closetext_command ; unused
+UnusedClosetextScript: ; unreferenced
+	closetext
 
 Script_closetext:
 	call _OpenAndCloseMenu_HDMATransferTilemapAndAttrmap
@@ -2352,7 +2353,7 @@ Script_checksave:
 	ld [wScriptVar], a
 	ret
 
-; unused
+Script_checkver_duplicate: ; unreferenced
 	ld a, [.gs_version]
 	ld [wScriptVar], a
 	ret

engine/overworld/time.asm

@@ -220,12 +220,12 @@ CheckUnusedTwoDayTimer:
 	call UpdateTimeRemaining
 	ret
 
-; unused
+UnusedSetSwarmFlag: ; unreferenced
 	ld hl, wDailyFlags1
 	set DAILYFLAGS1_FISH_SWARM_F, [hl]
 	ret
 
-; unused
+UnusedCheckSwarmFlag: ; unreferenced
 	and a
 	ld hl, wDailyFlags1
 	bit DAILYFLAGS1_FISH_SWARM_F, [hl]