Remove conflicting nvidia-tensorboard package (#2622)

Attempt to resolve tensorboard Docker error in https://github.com/ultralytics/yolov5/issues/2573

Dockerfile

@@ -7,6 +7,7 @@ RUN apt update && apt install -y zip htop screen libgl1-mesa-glx
 # Install python dependencies
 COPY requirements.txt .
 RUN python -m pip install --upgrade pip
+RUN pip uninstall -y nvidia-tensorboard nvidia-tensorboard-plugin-dlprof
 RUN pip install --no-cache -r requirements.txt gsutil notebook
 
 # Create working directory