x86/syscall/compat: Remove unused macro __SYSCALL_ia32_NR

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240321211847.132473-2-brgerst@gmail.com

Author: Brian Gerst

arch/x86/include/asm/ia32_unistd.h

@@ -6,7 +6,6 @@
  * This file contains the system call numbers of the ia32 compat ABI,
  * this is for the kernel only.
  */
-#define __SYSCALL_ia32_NR(x) (x)
 #include <asm/unistd_32_ia32.h>
 
 #endif /* _ASM_X86_IA32_UNISTD_H */