Remove function exports/imports for inlined Value functions

[benjaminwinger]

Being inline, they don't need library symbols, and dllimport on windows isn't allowed for inline functions since there would be nothing to import.

Should fix CI again I think.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (7308523) 89.63% compared to head (97d40b4) 89.66%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2134      +/-   ##
==========================================
+ Coverage   89.63%   89.66%   +0.03%     
==========================================
  Files         988      988              
  Lines       35729    35729              
==========================================
+ Hits        32024    32036      +12     
+ Misses       3705     3693      -12     

Files	Coverage Δ
src/include/common/types/value/value.h	90.00% <ø> (ø)

... and 2 files with indirect coverage changes

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