cpu/native: remove dINT/eINT definitions

cpu/native/include/cpu.h

@@ -26,10 +26,6 @@
 extern "C" {
 #endif
 
-/* TODO: remove once these have been removed from RIOT: */
-void dINT(void);
-void eINT(void);
-
 /**
  * @brief   Prints the last instruction's address
  */

cpu/native/irq_cpu.c

@@ -218,17 +218,6 @@ int inISR(void)
     return _native_in_isr;
 }
 
-
-void dINT(void)
-{
-    disableIRQ();
-}
-
-void eINT(void)
-{
-    enableIRQ();
-}
-
 int _native_popsig(void)
 {
     int nread, nleft, i;