Remove item from right click menu

Long ago I added a custom menu item to the right click menu in Word.  If I highlight some text, and then right click, I see that menu item.  I can't remember how I did it and I can't find out how to remove it.  Anyone have detailed instructions for removing it?

Here's what I've tried from the Script Editor inside of Word (with no luck):

Sub AutoExec()
   Dim cb As CommandBar
    Dim ctl As CommandBarControl
    CustomizationContext = NormalTemplate
    Set cb = CommandBars("Text")

    For Each ctl In cb.Controls
        If ctl.Tag = "MY CUSTOM COMMAND" Then
            ctl.Delete
        End If
    Next

End Sub

Maybe it's not the "Text" commandbar?  If not, how do I get a hold of the right click menu?Start Free Trial