fix sshfs openssh-gssapi override

fixed to match the new format in NixOS/nixpkgs#526462

Author: BNH440

profiles/base.nix

@@ -237,15 +237,9 @@ in
     emacs
 
     # Default openssh doesn't include GSSAPI support, so we need to override sshfs
-    # to use the openssh_gssapi package instead. This is annoying because the
-    # sshfs package's openssh argument is nested in another layer of callPackage,
-    # so we override callPackage instead to override openssh.
+    # to use the openssh_gssapi package instead.
     (sshfs.override {
-      callPackage =
-        fn: args:
-        (pkgs.callPackage fn args).override {
-          openssh = pkgs.openssh_gssapi;
-        };
+      openssh = pkgs.openssh_gssapi;
     })
 
     comma-with-db