Clean up some WRAM and SRAM involving unused mobile data (#6)

engine/menus/init_gender.asm

@@ -1,21 +1,3 @@
-InitCrystalData:
-	ld a, $1
-	ld [wd474], a
-	xor a
-	ld [wd473], a
-	ld [wPlayerGender], a
-	ld [wd475], a
-	ld [wd476], a
-	ld [wd477], a
-	ld [wd478], a
-	ld a, [wd479]
-	res 0, a ; ???
-	ld [wd479], a
-	ld a, [wd479]
-	res 1, a ; ???
-	ld [wd479], a
-	ret
-
 InitGender:
 	call InitGenderScreen
 	call LoadGenderScreenPal
@@ -62,7 +44,6 @@ InitGenderScreen:
 	ld c, 8
 	call DelayFrames
 	call ClearBGPalettes
-	call InitCrystalData
 	call LoadFrame
 	hlcoord 0, 0
 	ld bc, SCREEN_HEIGHT * SCREEN_WIDTH

engine/menus/intro_menu.asm

@@ -302,7 +302,6 @@ LoadOrRegenerateLuckyIDNumber:
 Continue:
 	farcall TryLoadSaveFile
 	jr c, .FailToLoad
-	farcall _LoadData
 	call LoadStandardMenuHeader
 	call DisplaySaveInfoOnContinue
 	ld a, $1

engine/menus/save.asm

@@ -339,7 +339,6 @@ ErasePreviousSave:
 	call EraseBoxes
 	call EraseHallOfFame
 	call EraseLinkBattleStats
-	call SaveData
 	ld a, BANK(sStackTop)
 	call OpenSRAM
 	xor a
@@ -368,10 +367,6 @@ EraseHallOfFame:
 	call ByteFill
 	jp CloseSRAM
 
-SaveData:
-	call _SaveData
-	ret
-
 HallOfFame_InitSaveIfNeeded:
 	ld a, [wSavedAtLeastOnce]
 	and a
@@ -717,31 +712,6 @@ VerifyBackupChecksum:
 	pop af
 	ret
 
-_SaveData:
-	; This is called within two scenarios:
-	;   a) ErasePreviousSave (the process of erasing the save from a previous game file)
-	;   b) unused mobile functionality
-	; It is not part of a regular save.
-
-	ld a, BANK(sCrystalData)
-	call OpenSRAM
-	ld hl, wCrystalData
-	ld de, sCrystalData
-	ld bc, wCrystalDataEnd - wCrystalData
-	call CopyBytes
-
-	jp CloseSRAM
-
-_LoadData:
-	ld a, BANK(sCrystalData)
-	call OpenSRAM
-	ld hl, sCrystalData
-	ld de, wCrystalData
-	ld bc, wCrystalDataEnd - wCrystalData
-	call CopyBytes
-
-	jp CloseSRAM
-
 GetBoxAddress:
 	ld a, [wCurBox]
 	cp NUM_BOXES