genesys: Remove duplicate way to check for transparency support

backend/genesys/enums.h

@@ -442,9 +442,6 @@ enum class ModelFlag : unsigned
     // use 14-bit gamma table instead of 12-bit
     GAMMA_14BIT = 1 << 1,
 
-    // has XPA adapter
-    XPA = 1 << 3,
-
     // skip lamp warmup (genesys_warmup())
     SKIP_WARMUP = 1 << 4,
 

backend/genesys/gl646.cpp

@@ -3119,7 +3119,7 @@ void CommandSetGl646::update_hardware_sensors(Genesys_Scanner* session) const
     }
 
   /* XPA detection */
-    if (has_flag(dev->model->flags, ModelFlag::XPA)) {
+    if (dev->model->has_method(ScanMethod::TRANSPARENCY)) {
         switch (dev->model->gpio_id) {
             case GpioId::HP3670:
             case GpioId::HP2400:

backend/genesys/tables_model.cpp

@@ -1512,7 +1512,6 @@ void genesys_init_usb_device_tables()
     model.gpio_id = GpioId::HP3670;
     model.motor_id = MotorId::HP3670;
     model.flags = ModelFlag::GAMMA_14BIT |
-                  ModelFlag::XPA |
                   ModelFlag::DARK_CALIBRATION |
                   ModelFlag::OFFSET_CALIBRATION |
                   ModelFlag::CUSTOM_GAMMA;