remove old MSVC hacks

[neheb]

This is C++11 now.

Signed-off-by: Rosen Penev rosenp@gmail.com

[codecov]

Codecov Report

Merging #1704 (6c3ba17) into main (23dbf4f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1704   +/-   ##
=======================================
  Coverage   66.90%   66.90%           
=======================================
  Files         151      151           
  Lines       20764    20764           
=======================================
  Hits        13892    13892           
  Misses       6872     6872           

Impacted Files	Coverage Δ
include/exiv2/types.hpp	90.90% <ø> (ø)

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