You could use a macro like the following to delete all LINK fields whose result is effectively nothing:
Code:
Sub Demo()
Application.ScreenUpdating = False
Dim i As Long
With ActiveDocument
For i = Fields.Count To 1 Step -1
With .Fields(i)
If .Type = wdFieldLink Then
If Trim(.Result) = "" Then .Delete
End If
End With
Next
End With
Application.ScreenUpdating = True
End Sub
For PC macro installation & usage instructions, see:
http://www.gmayor.com/installing_macro.htm
For Mac macro installation & usage instructions, see:
http://word.mvps.org/Mac/InstallMacro.html