fix(bus): Revert #767 to keep staging merge-ready

[runkelcorey]

What changes does this PR propose?

Reverts #767 after finding some issues with how it presents headways. More work is needed so want to keep staging clean for any prod deployments needed in the meantime.

How were these changes validated?

CI still passes

What questions should reviewers consider?

None

[github-actions]

LCOV of commit 6141a85 during Continuous Integration (Python) #2008

Summary coverage rate:
  lines......: 64.7% (3600 of 5562 lines)
  functions..: 29.9% (275 of 920 functions)
  branches...: no data found

Files changed coverage rate:
                                                                                     |Lines       |Functions  |Branches    
  Filename                                                                           |Rate     Num|Rate    Num|Rate     Num
  =========================================================================================================================
  src/lamp_py/bus_performance_manager/events_metrics.py                              |67.2%     58|33.3%    12|    -      0

[github-actions]

LCOV of commit 7f5e6c8 during Continuous Integration (Python) #2011

Summary coverage rate:
  lines......: 64.7% (3599 of 5562 lines)
  functions..: 29.9% (275 of 920 functions)
  branches...: no data found

Files changed coverage rate:
                                                                                     |Lines       |Functions  |Branches    
  Filename                                                                           |Rate     Num|Rate    Num|Rate     Num
  =========================================================================================================================
  src/lamp_py/bus_performance_manager/events_metrics.py                              |67.2%     58|33.3%    12|    -      0