Epic - deprecate legacy speedmaps and review associated modules

[edasmalchi]

Epic Information - deprecate legacy speedmaps and review associated modules

Summary

• Now that speedmaps are deployed via the rt_segment_speeds pipeline, it's soon time to finally deprecate the old code. We do need to ensure we can generate the SCCP/LPP Level of Transit Delay metric via the new pipeline first, and let's also use this opportunity to clean up shared_utils.rt_utils.

Reviewers [Stakeholders]

1. @tiffanychu90
2. @edasmalchi

Issues/parts

• create functions to run SCCP/LPP level of transit delay metric using rt_segment_speeds pipeline
• consolidate time of day related functions (including shared_utils.rt_utils.categorize_time_of_day) and definitions in shared_utils.time_helpers, migrate existing uses
• consolidate and document functions related to webapp mapping (some in ca_transit_speed_maps/speedmap_utils for now)
• remove rt_delay/rt_analysis package
• review shared_utils.rt_utils for deprecated functions, other opportunities to consolidate
• review docs site, remove rt_analysis module docs

Deliverables