ARM: mxc: Remove test_for_ltirq

The patch "ARM: gic: consolidate PPI handling" removes the usage
of test_for_ltirq. After the merge of imx6q remove this there, too.

Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: NDirk Behme <dirk.behme@de.bosch.com>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Acked-by: NMarc Zyngier <marc.zyngier@arm.com>

arch/arm/plat-mxc/include/mach/entry-macro.S

@@ -25,6 +25,3 @@
 
 	.macro test_for_ipi, irqnr, irqstat, base, tmp
 	.endm
-
-	.macro test_for_ltirq, irqnr, irqstat, base, tmp
-	.endm