Install Jupyter Notebook/Lab
conda
If you use conda, you can install it with:
conda install -c conda-forge jupyterlab
pip
If you use pip, you can install it with:
pip install jupyterlab
Check & uninstall Jupyter Kernels
Run jupyter kernelspec list
to get the paths of all your kernels.
Then simply uninstall your unwanted-kernel
jupyter kernelspec uninstall unwanted-kernel