Blackfin: drop irq enable in init_arch_irq()

Kernel common code will enable irq, drop it in init_arch_irq().

Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>

arch/blackfin/mach-common/ints-priority.c

@@ -1441,7 +1441,6 @@ int __init init_arch_irq(void)
 		IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
 		IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
 
-	bfin_sti(bfin_irq_flags);
 
 	/* This implicitly covers ANOMALY_05000171
 	 * Boot-ROM code modifies SICA_IWRx wakeup registers