remove local pic flags, now set by hardened stdenv

pkgs/development/libraries/science/math/atlas/default.nix

@@ -73,14 +73,10 @@ stdenv.mkDerivation {
     configureScript=../configure
   '';
 
-  # * -fPIC is passed even in non-shared builds so that the ATLAS code can be
-  #   used to inside of shared libraries, like Octave does.
-  #
   # * -t 0 disables use of multi-threading. It's not quite clear what the
   #   consequences of that setting are and whether it's necessary or not.
   configureFlags = [
     "-Fa alg"
-    "-fPIC"
     "-t ${threads}"
     cpuConfig
   ] ++ optional shared "--shared"

pkgs/development/libraries/science/math/suitesparse/default.nix

@@ -33,8 +33,6 @@ stdenv.mkDerivation {
     "LAPACK="
   ];
 
-  NIX_CFLAGS = "-fPIC";
-
   postInstall = ''
     # Build and install shared library
     (