Retry sync for all boards

src/VehicleSetup/Bootloader.cc

@@ -705,16 +705,13 @@ bool Bootloader::_syncWorker(void)
 
 bool Bootloader::_sync(void)
 {
-    if (_sikRadio) {
+    // Sometimes getting sync is flaky, try 3 times
     _port.readAll();
     bool success = false;
     for (int i=0; i<3; i++) {
         success = _syncWorker();
     }
     return success;
-    } else {
-        return _syncWorker();
-    }
 }
 
 bool Bootloader::_get3DRRadioBoardId(uint32_t& boardID)