Simplify the cross-compilation build scripts.

[etr]

Description of the Change

This change simplifies the checks performed during cross-compilation by removing the compile-and-check performed on libmicrohttpd (which cannot work due to the different binary format)

Possible Drawbacks

This might lead to errors during compilation/linking if the wrong version of libmicrohttpd is used

Verification Process

Unit tests / Integration tests

Release Notes

Removed version checks on libmicrohttpd when cross-compiling.

[codecov-io]

Codecov Report

Merging #155 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #155      +/-   ##
==========================================
+ Coverage    95.3%   95.31%   +<.01%     
==========================================
  Files          35       35              
  Lines        3197     3200       +3     
==========================================
+ Hits         3047     3050       +3     
  Misses        150      150

Impacted Files	Coverage Δ
src/httpserver/http_request.hpp	95.83% <0%> (+0.59%)	⬆️

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