Just a little info, most the folks on this forum are located in the US and Peugeot hasn't sold cars here for over 30 years. Its unlikely one of us has a easy hack to remove the mobiliser without seeing a full wiring diagram of how it is attached to the car. FWIW, US cars with manufacturer installed security computers usually require the engine control computer to be reprogrammed to ignore the equivalent of the mobiliser so the engine will start and run without the mobiliser attached.
My advice is to Google Peugeot owners forums and see if someone has a hack to bypass this device. If you want to do it, its likely someone has already done it and will share how.