lapack: Make without atlas default as currently broken (#49594)

Atlas is actually entirely removed in latest upstream.

temporary/all-packages.nix

@@ -17,6 +17,9 @@ self: super: pkgs: with pkgs; {
     ];
   } );
 
+  # ATLAS build is broken and was entirely removed in November (#49594)
+  liblapack = super.liblapack.override { atlas = null; };
+
   # https://github.com/NixOS/nixpkgs/issues/44426
   python27 = super.python27.override { packageOverrides = pythonOverrides; };
   python34 = super.python34.override { packageOverrides = pythonOverrides; };