Revert "Simulators/VSIM: Read initial position from configuration file."

This reverts commit da6230391226a4136adab858a74f0a3704fb8dc3.
Revert "Config: auv/simulator: Added Vehicle Simulator initial position parameter."

This reverts commit 193cb30bbcf9adcd16e852cc2ede346c1508a438.
Simulators/GPS: This will be the task to bootstrap everything.
Config: auv/simulator: Setting initial GPS position.