fix(tensorrt classifier wrapper): fix unreadVariable (#8355)

* fix:unreadVariable

Signed-off-by: kobayu858 <yutaro.kobayashi@tier4.jp>

* fix:unreadVariable

Signed-off-by: kobayu858 <yutaro.kobayashi@tier4.jp>

---------

Signed-off-by: kobayu858 <yutaro.kobayashi@tier4.jp>

Author: kobayu858

perception/autoware_tensorrt_classifier/src/tensorrt_classifier.cpp

@@ -123,7 +123,6 @@ TrtClassifier::TrtClassifier(
     autoware::tensorrt_classifier::ImageStream stream(
       max_batch_size, input_dims, calibration_images);
     fs::path calibration_table{model_path};
-    std::string calibName = "";
     std::string ext = "";
     if (build_config.calib_type_str == "Entropy") {
       ext = "EntropyV2-";