freecad: clean up dependencies

- libf2c: It was removed upstream in 2012 [1]. It was added to the nix package in 2011 in 60844f7488 and is no longer required.
- swig: move to nativeBuildInputs. `swig` is an interface compiler and is not required at runtime.
- doxygen: move to nativeBuildInputs. `doxygen` is required to build docs, but is unnecessary at runtime.

[1] https://github.com/FreeCAD/FreeCAD/commit/4af0ca1401716d47faec5d7111ffcd5281899f2c

pkgs/by-name/fr/freecad/package.nix

@@ -10,7 +10,6 @@
   gfortran,
   gts,
   hdf5,
-  libf2c,
   libGLU,
   libredwg,
   libsForQt5,
@@ -81,6 +80,8 @@ freecad-utils.makeCustomizable (
         ninja
         pkg-config
         gfortran
+        swig
+        doxygen
         wrapGAppsHook3
       ]
       ++ lib.optionals (qtVersion == 5) [
@@ -93,7 +94,6 @@ freecad-utils.makeCustomizable (
       [
         boost
         coin3d
-        doxygen
         eigen
         fmt
         gitpython # for addon manager
@@ -101,7 +101,6 @@ freecad-utils.makeCustomizable (
         hdf5
         libGLU
         libXmu
-        libf2c
         matplotlib
         medfile
         mpi
@@ -115,7 +114,6 @@ freecad-utils.makeCustomizable (
         python
         pyyaml # (at least for) PyrateWorkbench
         scipy
-        swig
         vtk
         xercesc
         yaml-cpp