Wrap your conditional text is a rich text content control e.g., title it "Kill me"
Code:
Sub ScratchMacro()
'A basic Word macro coded by Greg Maxey
Dim bCheck As Boolean
Dim oRng As Range
bCheck = False 'Simulates your check box unchecked state.
If Not bCheck Then
Set oRng = ActiveDocument.SelectContentControlsByTitle("Kill me").Item(1).Range.Paragraphs(1).Range
ActiveDocument.SelectContentControlsByTitle("Kill me").Item(1).Delete True
oRng.Delete
End If
lbl_Exit:
Exit Sub
End Sub