Rename outdated references to HRVO

[nycrat]

Description of the task

Our previous motion planning algorithm was HRVO + ENLSVG, but now we use trajectory planner. Our trajectory planning test (simulated_hrvo_test.py) should be renamed to match this new motion planning architecture. There may be other references to hrvo which should also be removed/renamed.

Acceptance criteria

• No more references to hrvo in our codebase
• simulated_hrvo_test.py and its contents are renamed to something related to "trajectory planner"

Blocked By

N/A