Would I be able to pull the throttle position sensor and the choke postion sensor off and just run a cable out to the choke for cold start ups?
There's no choke position sensor. That upper plate in the throttle body is know as the tandem valve... It may look similar, but it doesn't serve the same function as the choke in a carb. It's simply there to deflect air over the nozzle of the upper fuel injector when the engine isn't drawing much air. The point being to improve the mixing of air and fuel, not to richen the mix as a choke does.
because all the sensors do is regulate idle right?
No, the ECU (engine control unit - the fuel injection and ignition timing computer) uses the TPS signal to judge engine load and when to cut fuel while coasting. If you pull the TPS off the throttle body, the ECU will likely throw an error code, and you probably won't be able to rev the engine over 1500 RPM or so.