Remove forcine Icom rigs to always set mode.

If mode does not change then don't set it
https://github.com/Hamlib/Hamlib/issues/1580

src/rig.c

@@ -2824,8 +2824,14 @@ int HAMLIB_API rig_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
         retcode = caps->get_mode(rig, vfo, &mode_curr, &width_curr);
 
         // For Icom rigs we may need to force the filter so we always set mode
+#if 0
+        // This should not be necessary anymore with the new filter method for Icom rigs
+        // Hopefully fixes issue https://github.com/Hamlib/Hamlib/issues/1580
         if (retcode == RIG_OK && mode == mode_curr
                 && RIG_ICOM != RIG_BACKEND_NUM(rig->caps->rig_model))
+#else
+        if (retcode == RIG_OK && mode == mode_curr)
+#endif
         {
             rig_debug(RIG_DEBUG_VERBOSE,
                       "%s: mode already %s and bw change not requested\n", __func__,