Remove block setting VFO_A -- does not work with rigs that don't have

VFO_A
https://github.com/Hamlib/Hamlib/issues/274

rigs/icom/icom.c

@@ -1128,6 +1128,7 @@ int icom_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
         }
     }
 
+#if 0 // does not work with rigs without VFO_A
     if (vfo == RIG_VFO_CURR)
     {
         vfo = priv->curr_vfo;
@@ -1135,6 +1136,7 @@ int icom_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
         rig_debug(RIG_DEBUG_VERBOSE, "%s: CurrVFO changed to %s\n", __func__,
                   rig_strvfo(vfo));
     }
+#endif
 
 
     retval = set_vfo_curr(rig, vfo, priv->curr_vfo);

rigs/icom/icom.h

@@ -31,7 +31,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20200525"
+#define BACKEND_VER "20200601"
 
 /*
  * defines used by comp_cal_str in rig.c