Use scripts from sim platform

This PR is similar to https://github.com/wavelab/anm_unreal_test_suite/pull/85 but for wise-sim-scenarios. The goal of this PR is to remove scripts, docs, and other files that are accessible through anm_sim_platform.

Testing: Install wise sim

$ bash scripts/wise_sim_install.bash 
<enter password>
...
WISE Sim installed successfully.

Install wise sim env separately

bash scripts/install_wise_sim_env.bash 
Set up short launch autocomplete
...
WISE Sim user environment setup successfully.

1. Test simple slaunch

$ slaunch aaa_cul_de_sac
...
Successfully runs in a complete state

2. Test simple create_scenario

$ create_scenario wise-sim-scenarios test aaa_cul_de_sac
New scenario test_create created at:
...
Based off of scenario aaa_cul_de_sac
$ slaunch test_create
*simulator runs properly