I did download and check oQueue, but nothing in the code contains this message.
Tried to search for "ignoring" and "ignored" but nothing shows up in oQueue.
Thus I conclude that you have some other addon that does this, maybe it triggers when an invite is shown, I'd recommend finding the culprit and updating/editing the part that makes this message appear, instead of adding more code to counter it.
I assume you have Windows 7+ so you can use this powershell script to help you:
Code:
Get-ChildItem "C:\Games\World of Warcraft\Interface\AddOns" -recurse -include *.lua,*.xml | Get-Content | Select-String -pattern ignoring, ignored
You should modify the game path to where your game is installed, and preferably scan addon by addon instead the whole addons folder at once (because the script only returns the lines that match the words "ignoring" or "ignored", not much help when there isn't a filename. :P
Anyway, start powershell by typing "powershell" in the "Run" dialog (WinKey+R is the hotkey), modify the path to lead to your game folder, copy the modified script and paste it in the powershell window, run it and wait. Rest is up to you!