Remove dead code.

sys/arm/arm/locore.S

@@ -162,10 +162,6 @@ mmu_done:
 
 	/* init arm will return the new stack pointer. */
 	mov	sp, r0
-	mov	fp, #0x00000000		/* trace back starts here */
-	mov	ip, sp
-	stmfd	sp!, {fp, ip, lr, pc}
-	sub	fp, ip, #4
 
 	bl	_C_LABEL(mi_startup)		/* call mi_startup()! */
 

sys/arm/arm/swtch.S

@@ -133,8 +133,6 @@ ENTRY(cpu_throw)
 	ldr	r0, .Lcurthread
 	mov	r5, r1
 
-	mov	r6, r2
-
 	/*
 	 * r4 = lwp
 	 * r5 = lwp0
@@ -347,7 +345,6 @@ ENTRY(cpu_switch)
 	ldr	r1, [r9, #(PCB_DACR)]		/* r1 = new DACR */
 
 	teq	r10, r11			/* Same L1? */
-	ldr	r5, [r5]
 	cmpeq	r0, r1				/* Same DACR? */
 	beq	.Lcs_context_switched		/* yes! */
 	ldr	r3, .Lblock_userspace_access