Removes Broken "Run Pester Tests" from the Command Pallette

[SydneyhSmith]

PR Summary

Fixes #2715

Removes "PowerShell.RunPesterTestsFromFile" and "PowerShell.DebugPesterTestsFromFile" from the command pallette since they do not work, and are tasks that can effectively be run in other ways.

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[TylerLeonhardt]

This is not quite what we want. Since this is in the "explorer/context": [ section, that controls the what shows in the context menu when you right click on file in the explorer pane (to see what I've talking about, right click on a foo.Tests.ps1 file)

What we want is two new entries under "commandPalette": [ which is right above "explorer/context": [

[TylerLeonhardt]

Also don't worry about the test failures... that's because of the Omnisharp issue.

[TylerLeonhardt]

I accidentally fixed this allowing the command palette to work so we don't need this 😅