The Jupyter kernel in VSCode has duplicate options.

[Jill-Cheng]

Environment data

• VS Code version: Version: 1.51.1 (user setup)
• Jupyter Extension version (available under the Extensions sidebar): 2020.11.392013122
• Python Extension version (available under the Extensions sidebar): 2020.11.371526539
• OS (Windows | Mac | Linux distro) and version: OS: OS: Windows_NT x64 10.0.19041
• Python and/or Anaconda version: python3.7 from anaconda; python 3.8; python3.9;
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv; conda;
• Jupyter server running: N/A

Expected behaviour

The kernel options of Jupyter in VSCode are not duplicated.

Actual behaviour：

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. Open VSCode, install the extension "python".
2. Create a new Jupyter file, the Jupyter kernel displays "python:3 idle", click the kernel option, some "python 3" appears, from the path point of view, there are some repetitions of the anaconda kernel.

Logs

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

none

[DonJayamanne]

Duplicate of #399