[MIPS] IRIX: Goodbye and thanks for all the fish

Never terribly functional or popular, plagued by hard to fix bugs the time
to say goodbye has more than arrived.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/scall32-o32.S

@@ -34,12 +34,8 @@ NESTED(handle_sys, PT_SIZE, sp)
 
 	lw	t1, PT_EPC(sp)		# skip syscall on return
 
-#if defined(CONFIG_BINFMT_IRIX)
-	sltiu	t0, v0, MAX_SYSCALL_NO + 1 # check syscall number
-#else
 	subu	v0, v0, __NR_O32_Linux	# check syscall number
 	sltiu	t0, v0, __NR_O32_Linux_syscalls + 1
-#endif
 	addiu	t1, 4			# skip to next instruction
 	sw	t1, PT_EPC(sp)
 	beqz	t0, illegal_syscall
@@ -264,22 +260,14 @@ bad_alignment:
 	END(sys_sysmips)
 
 	LEAF(sys_syscall)
-#if defined(CONFIG_BINFMT_IRIX)
-	sltiu	v0, a0, MAX_SYSCALL_NO + 1 # check syscall number
-#else
 	subu	t0, a0, __NR_O32_Linux	# check syscall number
 	sltiu	v0, t0, __NR_O32_Linux_syscalls + 1
-#endif
 	sll	t1, t0, 3
 	beqz	v0, einval
 
 	lw	t2, sys_call_table(t1)		# syscall routine
 
-#if defined(CONFIG_BINFMT_IRIX)
-	li	v1, 4000			# nr of sys_syscall
-#else
 	li	v1, 4000 - __NR_O32_Linux	# index of sys_syscall
-#endif
 	beq	t0, v1, einval			# do not recurse
 
 	/* Some syscalls like execve get their arguments from struct pt_regs
@@ -324,13 +312,6 @@ einval:	li	v0, -EINVAL
 	.endm
 
 	.macro	syscalltable
-#if defined(CONFIG_BINFMT_IRIX)
-	mille	sys_ni_syscall		0	/*    0 -  999 SVR4 flavour */
-	mille	sys_ni_syscall		0	/* 1000 - 1999 32-bit IRIX */
-	mille	sys_ni_syscall		0	/* 2000 - 2999 BSD43 flavour */
-	mille	sys_ni_syscall		0	/* 3000 - 3999 POSIX flavour */
-#endif
-
 	sys	sys_syscall		8	/* 4000 */
 	sys	sys_exit		1
 	sys	sys_fork		0