cpu/arm7_common: removed mc1322x code

cpu/arm7_common/common.s

@@ -144,15 +144,10 @@ arm_irq_handler:
     MRS R1, CPSR
     MSR SPSR, R1
 
-.if (CPU != mc1322x)
     /* jump into vic interrupt */
     mov    r0, #0xffffff00    /* lpc23xx */
     ldr    r0, [r0]
     add    lr,pc,#4
-.else
-    /* mc1322x seems to lack a VIC, distinction of IRQ has to be done in SW */
-    ldr    r0, =isr           /* mc1322x */
-.endif
 
     mov     pc, r0