The lines can be removed. The hard lines that run under the car go to a pump and a canister. The canister is located below the fuel tank and the pump is behind the wheel well lining on the rear driver's side wheel well. I removed them both and didn't have any problems except DTCs were stored. To remove the hard lines you will have to cut them or disconnect your exhaust system and remove heat shielding to get them out in one piece (MAJOR PITA).
Also, a heads up that for those people who are NOT running stand alone, if you disconnect the EVAP pump thing that is part of the crap outlined in red in the picture above, the misfire detection system stops working as well. So, I recommend leaving that thing plugged in and just tuck it away somewhere.
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