x86: remove migration makefile tweaks

The makefile tweaks to allow the build during the move of
code from arch/i386 and arch/x86_64 are not longer necessary.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/i386/Makefile

@@ -20,10 +20,6 @@
 # Fill in SRCARCH
 SRCARCH	:= x86
 
-archprepare:
-	@mkdir -p ${objtree}/arch/x86/kernel
-
-
 HAS_BIARCH      := $(call cc-option-yn, -m32)
 ifeq ($(HAS_BIARCH),y)
 AS              := $(AS) --32

arch/x86_64/Makefile

@@ -24,10 +24,6 @@
 # Fill in SRCARCH
 SRCARCH	:= x86
 
-archprepare:
-	@mkdir -p ${objtree}/arch/x86/kernel
-
-
 LDFLAGS		:= -m elf_x86_64
 OBJCOPYFLAGS	:= -O binary -R .note -R .comment -S
 LDFLAGS_vmlinux :=