refactor(Server): remove redundant inner functions

[ylemkimon]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

N/A

Motivation / Use-Case

This PR refactors Server.js, removing redundant inner functions introduced in #3714.

Breaking Changes

No

Additional Info

[codecov]

Codecov Report

Merging #3750 (25ab65a) into master (88dae29) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3750      +/-   ##
==========================================
- Coverage   92.90%   92.88%   -0.02%     
==========================================
  Files          14       14              
  Lines        1324     1321       -3     
  Branches      465      463       -2     
==========================================
- Hits         1230     1227       -3     
  Misses         87       87              
  Partials        7        7              

Impacted Files	Coverage Δ
lib/Server.js	93.84% <100.00%> (-0.02%)	⬇️

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[snitin315]

LGTM, thanks!