remove init/fini array asm from arm crti/crtn files

this code has been replaced by portable C code that works on all
archs. the old asm needs to be removed or ctors/dtors will run twice.

crt/arm/crti.s

 .section .init
 .global _init
 _init:
-	push {r0,r1,r2,r4,r5,lr}
-
-.weak __fini_array_start
-.weak __fini_array_end
-.hidden __fini_array_start
-.hidden __fini_array_end
+	push {r0,lr}
 
 .section .fini
 .global _fini
 _fini:
-	push {r4,r5,r6,lr}
-	adr lr, 1f
-	ldr r4, 2f
-	ldr r5, 2f+4
-	add r4, r4, lr
-	add r5, r5, lr
-1:	adr lr, 1b
-	cmp r4, r5
-	beq 3f
-	ldmia r4!, {r3}
-	tst r3,#1
-	moveq pc,r3
-	bx r3
-2:	.word __fini_array_start-1b
-	.word __fini_array_end-1b
-3:	
+	push {r0,lr}

crt/arm/crtn.s

-.weak __init_array_start
-.weak __init_array_end
-.hidden __init_array_start
-.hidden __init_array_end
-
 .section .init
-	adr lr, 1f
-	ldr r4, 2f
-	ldr r5, 2f+4
-	add r4, r4, lr
-	add r5, r5, lr
-1:	adr lr, 1b
-	cmp r4, r5
-	beq 3f
-	ldmia r4!, {r3}
-	ldm sp, {r0,r1,r2}
-	tst r3,#1
-	moveq pc,r3
-	bx r3
-3:	pop {r0,r1,r2,r4,r5,lr}
+	pop {r0,lr}
 	tst lr,#1
 	moveq pc,lr
 	bx lr
-2:	.word __init_array_start-1b
-	.word __init_array_end-1b
 
 .section .fini
-	pop {r4,r5,r6,lr}
+	pop {r0,lr}
 	tst lr,#1
 	moveq pc,lr
 	bx lr