mips: remove unused macros

Remove __NR_Linux_syscalls from uapi/asm/unistd.h as
there is no users to use NR_syscalls macro in mips
kernel.

MAX_SYSCALL_NO can also remove as there is commit
2957c9e6 ("[MIPS] IRIX: Goodbye and thanks for
all the fish"), eight years ago.
Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
[paul.burton@mips.com:
 - Drop the removal of NR_syscalls which is used by
   kernel/trace/trace.h.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: y2038@lists.linaro.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: arnd@arndb.de
Cc: deepa.kernel@gmail.com
Cc: marcin.juszkiewicz@linaro.org

arch/mips/include/uapi/asm/unistd.h

@@ -395,11 +395,6 @@
 #define __NR_syscalls			368
 #endif
 
-/*
- * Offset of the last Linux o32 flavoured syscall
- */
-#define __NR_Linux_syscalls		__NR_syscalls
-
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
 
 #define __NR_O32_Linux			4000
@@ -745,11 +740,6 @@
 #define __NR_syscalls			328
 #endif
 
-/*
- * Offset of the last Linux 64-bit flavoured syscall
- */
-#define __NR_Linux_syscalls		__NR_syscalls
-
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
 
 #define __NR_64_Linux			5000
@@ -1099,11 +1089,6 @@
 #define __NR_syscalls			332
 #endif
 
-/*
- * Offset of the last N32 flavoured syscall
- */
-#define __NR_Linux_syscalls		__NR_syscalls
-
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux			6000

arch/mips/kernel/scall32-o32.S

@@ -22,9 +22,6 @@
 #include <asm/war.h>
 #include <asm/asm-offsets.h>
 
-/* Highest syscall used of any syscall flavour */
-#define MAX_SYSCALL_NO	__NR_O32_Linux + __NR_O32_Linux_syscalls
-
 	.align	5
 NESTED(handle_sys, PT_SIZE, sp)
 	.set	noat