Replace deprecated mnemonics by the correct ones

The old mnemonics generate warnings with new versions of rgbds. This
patch replaces them by the correct ones.

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>

engine/battle/animations.asm

@@ -213,7 +213,7 @@ PlayAnimation:
 	ld h,a
 	ld de,.nextAnimationCommand
 	push de
-	jp [hl] ; jump to special effect function
+	jp hl ; jump to special effect function
 .playSubanimation
 	ld c,a
 	and a,%00111111
@@ -457,7 +457,7 @@ PlayApplyingAttackAnimation:
 	ld a,[hli]
 	ld h,[hl]
 	ld l,a
-	jp [hl]
+	jp hl
 
 AnimationTypePointerTable:
 	dw ShakeScreenVertically ; enemy mon has used a damaging move without a side effect
@@ -642,7 +642,7 @@ DoSpecialEffectByAnimationId:
 	ld l,a
 	ld de,.done
 	push de
-	jp [hl]
+	jp hl
 .done
 	pop bc
 	pop de
@@ -1080,7 +1080,7 @@ CallWithTurnFlipped:
 	ld [H_WHOSETURN],a
 	ld de,.returnAddress
 	push de
-	jp [hl]
+	jp hl
 .returnAddress
 	pop af
 	ld [H_WHOSETURN],a

engine/battle/battle_transitions.asm

@@ -62,7 +62,7 @@ BattleTransition:
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
-	jp [hl]
+	jp hl
 
 ; the three GetBattleTransitionID functions set the first
 ; three bits of c, which determines what transition animation

engine/battle/core.asm

@@ -3150,7 +3150,7 @@ ExecutePlayerMove:
 	jp z, ExecutePlayerMoveDone
 	call CheckPlayerStatusConditions
 	jr nz, .playerHasNoSpecialCondition
-	jp [hl]
+	jp hl
 .playerHasNoSpecialCondition
 	call GetCurrentMove
 	ld hl, wPlayerBattleStatus1
@@ -5690,7 +5690,7 @@ ExecuteEnemyMove:
 	ld [wDamageMultipliers], a
 	call CheckEnemyStatusConditions
 	jr nz, .enemyHasNoSpecialConditions
-	jp [hl]
+	jp hl
 .enemyHasNoSpecialConditions
 	ld hl, wEnemyBattleStatus1
 	bit ChargingUp, [hl] ; is the enemy charging up for attack?
@@ -7139,7 +7139,7 @@ _JumpMoveEffect:
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
-	jp [hl] ; jump to special effect handler
+	jp hl ; jump to special effect handler
 
 MoveEffectPointerTable:
 	 dw SleepEffect               ; unused effect

engine/battle/trainer_ai.asm

@@ -51,7 +51,7 @@ AIEnemyTrainerChooseMoves:
 	ld l, a
 	ld de, .nextMoveChoiceModification  ; set return address
 	push de
-	jp [hl]       ; execute modification function
+	jp hl         ; execute modification function
 .loopFindMinimumEntries ; all entries will be decremented sequentially until one of them is zero
 	ld hl, wBuffer  ; temp move selection array
 	ld de, wEnemyMonMoves  ; enemy moves
@@ -366,7 +366,7 @@ TrainerAI:
 	ld h,[hl]
 	ld l,a
 	call Random
-	jp [hl]
+	jp hl
 
 TrainerAIPointers:
 ; one entry per trainer class