Remove some deprecated options + dissolve some code

[cdrini]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 63.73%. Comparing base (6ec67ce) to head (4dc775c).

Files with missing lines	Patch %	Lines
src/plugins/search/plugin.search.js	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1570      +/-   ##
==========================================
- Coverage   63.75%   63.73%   -0.03%     
==========================================
  Files          68       68              
  Lines        6191     6182       -9     
  Branches     1375     1369       -6     
==========================================
- Hits         3947     3940       -7     
+ Misses       2205     2203       -2     
  Partials       39       39              

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