Uninstall wandb from notebook environments (#11729)

Uninstall W&B that are present in notebooks

Resolves unwanted W&B install issues in https://www.kaggle.com/code/ultralytics/yolov8/comments#2306977

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

utils/__init__.py

@@ -61,6 +61,7 @@ def notebook_init(verbose=True):
 
     import psutil
 
+    os.system('pip uninstall -y wandb')
     if is_colab():
         shutil.rmtree('/content/sample_data', ignore_errors=True)  # remove colab /sample_data directory