x86/pkeys: Remove __arch_set_user_pkey_access() declaration

In the x86 code __arch_set_user_pkey_access() is not used and is not
defined.

Remove the dead declaration.

Signed-off-by: Ira Weiny <[e-mail]>
Signed-off-by: Dave Hansen <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]

arch/x86/include/asm/pkeys.h

···
 	return __arch_override_mprotect_pkey(vma, prot, pkey);
 }
 
-extern int __arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
-		unsigned long init_val);
-
 #define ARCH_VM_PKEY_FLAGS (VM_PKEY_BIT0 | VM_PKEY_BIT1 | VM_PKEY_BIT2 | VM_PKEY_BIT3)
 
 #define mm_pkey_allocation_map(mm)	(mm->context.pkey_allocation_map)
···
 
 	return 0;
 }
-
-extern int __arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
-		unsigned long init_val);
 
 static inline int vma_pkey(struct vm_area_struct *vma)
 {