kill ptrace stuff; it's common to all m68k machines now

sys/arch/sun3/sun3/machdep.c

@@ -1168,48 +1168,3 @@ sysarch(p, uap, retval)
 {
     return EINVAL;
 }
-
-/*
- * The registers are in the frame; the frame is in the user area of
- * the process in question; when the process is active, the registers
- * are in "the kernel stack"; when it's not, they're still there, but
- * things get flipped around.  So, since p->p_regs is the whole address
- * of the register set, take its offset from the kernel stack, and
- * index into the user block.  Don't you just *love* virtual memory?
- * (I'm starting to think seymour is right...)
- */
-int
-ptrace_set_pc (struct proc *p, unsigned int addr)
-{
-        p->p_regs[PC] = addr;
-	return 0;
-}
-
-int
-ptrace_single_step (struct proc *p)
-{
-	struct pcb *pcb;
-	void *regs = (char*)p->p_addr +
-		((char*) p->p_regs - (char*) USRSTACK);
-
-	pcb = &p->p_addr->u_pcb;
-
-	pcb->pcb_ps |= PSL_T;
-	return 0;
-}
-
-/*
- * Copy the registers to user-space.  This is tedious because
- * we essentially duplicate code for trapframe and syscframe. *sigh*
- */
-int
-ptrace_getregs (struct proc *p, unsigned int *addr)
-{
-    return 0;
-}
-
-int
-ptrace_setregs (struct proc *p, unsigned int *addr)
-{
-    return 0;
-}