If a inquiry is truly authorized then it will only be removed after 2 years. There are no ways to get around it. The only way to remove it early is to convince the bank and that is highly unlikely as they are very strict about it.
Last year when I was still rebuilding, I applied for a Children's Place card trying to use the shopping cart trick and was denied. Before I knew I was denied, I called and asked about the status of my app and they told me sorry, but they couldn't approve. The lady then went on to tell me that if I wrote a letter to them, saying that I was mis-informed about applying for the card, that they would remove the hard inquiry for me. I never actually did it because I totally forgot (and it's off my reports now), but I guess some banks are willing to do it if you get the right person!
