DolphinDOS byte reception cleanup

c64/kernal/iec_fast/iec_rx_dispatch.s

@@ -1,10 +1,10 @@
 
 //
-// Arbitration code for normal/turbo transfer
+// Arbitration code for normal/JiffyDOS transfer
 //
 
 
-#if CONFIG_IEC_JIFFYDOS || CONFIG_IEC_DOLPHINDOS
+#if CONFIG_IEC_JIFFYDOS
 
 
 iec_rx_dispatch:
@@ -16,12 +16,7 @@ iec_rx_dispatch:
 	beq_far iec_rx_byte_jiffydos
 #endif // CONFIG_IEC_JIFFYDOS
 
-#if CONFIG_IEC_DOLPHINDOS
-	cmp #$02
-	beq_far iec_rx_byte_dolphindos
-#endif // CONFIG_IEC_DOLPHINDOS
-
 	jmp iec_rx_byte
 
 
-#endif // any turbo supported
+#endif