Remember that the revenue from the advert you want to cull helps to provide you with a public forum to air your views which would otherwise go unnoticed except to be misrepresented in the press.
More seriously, perhaps you should understand that I have a contract with easyJet to host their banner. If you feel that the message represents false advertising then I suggest you start the appropriate proceedings and argue the fact in court. If you can present me with a court order to remove what you alledge is false advertising then I will comply. In the meantime I will continue to honour my contract and you can continue to air your views on a public forum dedicated to your profession.