Clean up after migration to C++

xtoskrnl/ke/amd64/irq.cc

@@ -37,15 +37,3 @@ KE::Irq::SetInterruptHandler(IN ULONG Vector,
     ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetMiddle = (((ULONG_PTR)Handler >> 16) & 0xFFFF);
     ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetHigh = (ULONG_PTR)Handler >> 32;
 }
-
-
-
-/* TEMPORARY FOR COMPATIBILITY WITH C CODE */
-XTCLINK
-XTAPI
-VOID
-KeSetInterruptHandler(IN ULONG Vector,
-                      IN PVOID Handler)
-{
-    KE::Irq::SetInterruptHandler(Vector, Handler);
-}