Fix repeated items in left nav

[ppiegaze]

Why are the changes needed?

Left navigation had repeated items in it

What changes were proposed in this pull request?

Remove redundant items in left nav

How was this patch tested?

Local build of docs validated

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3e9fb05) 58.53% compared to head (f7968e8) 58.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4783   +/-   ##
=======================================
  Coverage   58.53%   58.54%           
=======================================
  Files         625      625           
  Lines       53669    53669           
=======================================
+ Hits        31417    31418    +1     
+ Misses      19735    19734    -1     
  Partials     2517     2517           

Flag	Coverage Δ
unittests	58.54% <ø> (+<0.01%)	⬆️

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