Removing this is a two step process.

Step 1:

Open PowerShell as administrator

Copy and paste the following into the PowerShell window.

Get-AppxPackage -all *HolographicFirstRun* | Remove-AppPackage -AllUsers

Press Enter

Reboot your computer

Step 2:

Open Task Manger

Click on the details tab and locate StartMenuExperienceHost.exe

Right click and click End Task

Then locate explorer.exe and end task

Click on task manager menu File -> Run

copy and paste the following:

%localappdata%\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy

In the file explorer delete the TempState Directory

Then in Task manager run explorer.exe

Now orphaned menu item should be removed.