Set `TF_CPP_MIN_LOG_LEVEL=3` for reduced verbosity (#12670)

ultralytics/utils/__init__.py

@@ -108,7 +108,7 @@ np.set_printoptions(linewidth=320, formatter={"float_kind": "{:11.5g}".format})
 cv2.setNumThreads(0)  # prevent OpenCV from multithreading (incompatible with PyTorch DataLoader)
 os.environ["NUMEXPR_MAX_THREADS"] = str(NUM_THREADS)  # NumExpr max threads
 os.environ["CUBLAS_WORKSPACE_CONFIG"] = ":4096:8"  # for deterministic training
-os.environ["TF_CPP_MIN_LOG_LEVEL"] = "2"  # suppress verbose TF compiler warnings in Colab
+os.environ["TF_CPP_MIN_LOG_LEVEL"] = "3"  # suppress verbose TF compiler warnings in Colab
 os.environ["TORCH_CPP_LOG_LEVEL"] = "ERROR"  # suppress "NNPACK.cpp could not initialize NNPACK" warnings
 os.environ["KINETO_LOG_LEVEL"] = "5"  # suppress verbose PyTorch profiler output when computing FLOPs