Identify and remove dead code

[aaron97neu]

In limo2.XX.py, there are several instances of function definitions such as get_KNN() or geocode_intersection() immediately next to get_KNN_Optimized() and geocode_intersection2(). This implies there is a fair bit of dead (will never be run) code in this file. Removal of this code will simplify the code base and allow us to focus our refactoring on code that will actually be done.

I wonder if there are tools that could assist in this? Maybe even a function call graph