asdf-dotnet fish script makes the prompt slow

[hensou]

Describe the bug

After installing and sourcing the fish script the prompt is very slow.

1. Install asdf-dotnet
2. Source the fish configuration file
3. Press enter and see the promp being slow

Expected behavior

It shouldn't be that slow.

Additional context

This happens because the script calls dotnet version in order to set the global variables accordingly. But we don't need to do that as we can get the version from the path.

[hensou]

closed by #12