Revert "hdf5-fortran: Mark broken on Darwin" (#80419)

This reverts commit 8836c4d71b.

Closes #79952

pkgs/tools/misc/hdf5/default.nix

@@ -70,6 +70,5 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.bsd3; # Lawrence Berkeley National Labs BSD 3-Clause variant
     homepage = https://www.hdfgroup.org/HDF5/;
     platforms = stdenv.lib.platforms.unix;
-    broken = (gfortran != null) && stdenv.isDarwin;
   };
 }