arm64/scs: Drop unused prototype __pi_scs_patch_vmlinux()

The function scs_patch_vmlinux() was removed in the LPA2 boot code
refactoring so remove the declaration as well.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20241106185513.3096442-8-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

Author: ardbiesheuvel

arch/arm64/include/asm/scs.h

@@ -54,7 +54,6 @@ enum {
 };
 
 int __pi_scs_patch(const u8 eh_frame[], int size);
-asmlinkage void __pi_scs_patch_vmlinux(void);
 
 #endif /* __ASSEMBLY __ */