Remove show routes on map

[landonreed]

Checklist

• Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
• Any modified or new methods or classes have helpful JSDoc and code is thoroughly commented
• The description lists all applicable issues this PR seeks to resolve
• The description lists any configuration setting(s) that differ from the default settings
• All tests and CI builds passing

Description

Removes the editor map layer control to show routes on the map. Fixes #627. Commented out because there is client interest in this feature coming back, but at the moment it's too risky.

[codecov-io]

Codecov Report

Merging #628 (e32b55f) into dev (725e897) will decrease coverage by 20.94%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##              dev     #628       +/-   ##
===========================================
- Coverage   36.61%   15.66%   -20.95%     
===========================================
  Files         326      326               
  Lines       17786    16609     -1177     
  Branches     5400     5022      -378     
===========================================
- Hits         6512     2602     -3910     
- Misses       9787    11967     +2180     
- Partials     1487     2040      +553     

Flag	Coverage Δ
end_to_end_tests	?
unit_tests	15.66% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ib/editor/components/map/EditorMapLayersControl.js	0.00% <0.00%> (-41.38%)	⬇️
...nager/components/validation/ServicePerModeChart.js	0.00% <0.00%> (-85.90%)	⬇️
lib/manager/components/validation/TripsChart.js	0.00% <0.00%> (-80.40%)	⬇️
lib/manager/components/HomeProjectDropdown.js	0.00% <0.00%> (-72.73%)	⬇️
...b/manager/containers/ActiveFeedVersionNavigator.js	0.00% <0.00%> (-70.00%)	⬇️
lib/admin/components/UserRow.js	0.00% <0.00%> (-67.40%)	⬇️
lib/editor/components/EditorSidebar.js	0.00% <0.00%> (-66.67%)	⬇️
lib/editor/containers/ActiveGtfsEditor.js	0.00% <0.00%> (-66.67%)	⬇️
lib/manager/components/version/VersionDateLabel.js	0.00% <0.00%> (-66.67%)	⬇️
lib/editor/components/EditorInput.js	0.00% <0.00%> (-65.69%)	⬇️
... and 262 more

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[evansiroky]

I'll approve this for now, but once this is merged and it closes #627, the issue should be reopened because this merely suppresses the problem instead of fixing the underlying problem. It'd probably be a good idea to encode polylines on the backend so that various calls to retrieve shape data won't require outputting raw shape data.