code: def tearDown(self):
      file_remove("dummy.csv")
  
file_path: evadb/test/unit_tests/readers/test_csv_reader.py
imports: import unittest
  from test.util import create_dummy_csv_batches, create_sample_csv, file_remove
  from evadb.expression.tuple_value_expression import TupleValueExpression
  from evadb.readers.csv_reader import CSVReader
label_desc: Use image node_id 2 for calling the CSVLoaderTest obj's underlying member method code with example usage: obj.tearDown() without return types