MX5: Remove dead code with ENABLE_IMPRECISE_ABORT

This code section is dead due to we never define
ENABLE_IMPRECISE_ABORT for MX5

Signed-off-by: Jason Liu <r64343@freescale.com>

arch/arm/cpu/armv7/mx5/lowlevel_init.S

@@ -257,20 +257,6 @@ lowlevel_init:
 	orr r1, r1, #(1 << 23)
 	str r1, [r0, #0x4]
 
-#ifdef ENABLE_IMPRECISE_ABORT
-	mrs r1, spsr		/* save old spsr */
-	mrs r0, cpsr		/* read out the cpsr */
-	bic r0, r0, #0x100	/* clear the A bit */
-	msr spsr, r0		/* update spsr */
-	add lr, pc, #0x8	/* update lr */
-	movs pc, lr		/* update cpsr */
-	nop
-	nop
-	nop
-	nop
-	msr spsr, r1		/* restore old spsr */
-#endif
-
 	init_l2cc
 
 	init_aips