Fix integration tests

[valer1435]

Such integration tests are outdated and should be repaired.

• test_exogenous_ts_example
• test_nemo_multiple_points_example
• test_api_example
• test_spam_detection_problem
• test_multi_modal_case
• test_classification_quality_improvement
• test_synthetic_regression_automl
• test_timeout
• test_profiler