sanebox: remove symlink-cache

i don't use sanebox anymore, and the cache was awful while it did exist, so just delete that

hosts/common/programs/sanebox.nix

@@ -1,18 +1,6 @@
-{ config, lib, pkgs, sane-lib, ... }:
+{ config, lib, pkgs, ... }:
 let
   cfg = config.sane.programs;
-  # create an AttrSet[String -> String]
-  # which maps symlink path -> symlink content
-  # for every symlink known to nix
-  fsSymlinksAsAttrs = lib.concatMapAttrs
-    (path: value: lib.optionalAttrs
-      ((value.symlink or null) != null)
-      {
-        "${path}" = value.symlink.target;
-      }
-    )
-    config.sane.fs
-  ;
 in
 {
   sane.programs.sanebox = {
@@ -41,40 +29,4 @@ in
   };
 
   environment.pathsToLink = lib.mkIf cfg.sanebox.enabled [ "/libexec/sanebox" ];
-
-  environment.etc = lib.mkIf cfg.sanebox.enabled {
-    "sanebox/symlink-cache".text = lib.concatStringsSep "\n" (
-      lib.mapAttrsToList
-        (k: v: "${k}\t${v}")
-        ({
-          "/bin/sh" = config.environment.binsh;
-          "${builtins.unsafeDiscardStringContext config.environment.binsh}" = "bash";
-          "/usr/bin/env" = config.environment.usrbinenv;
-          "${builtins.unsafeDiscardStringContext config.environment.usrbinenv}" = "coreutils";
-
-          # "/run/current-system" = "${config.system.build.toplevel}";
-          # XXX: /run/current-system symlink can't be cached without forcing regular mass rebuilds:
-          # mount it as if it were a directory instead.
-          "/run/current-system" = "";
-        } // lib.optionalAttrs config.hardware.graphics.enable {
-          "/run/opengl-driver" = let
-            gl = config.hardware.graphics;
-            # from: <repo:nixos/nixpkgs:nixos/modules/hardware/graphics.nix>
-            package = pkgs.buildEnv {
-              name = "opengl-drivers";
-              paths = [ gl.package ] ++ gl.extraPackages;
-            };
-          in "${package}";
-        } // lib.optionalAttrs (config.hardware.graphics.enable && config.hardware.graphics.enable32Bit) {
-          "/run/opengl-driver-32" = let
-            gl = config.hardware.graphics;
-            # from: <repo:nixos/nixpkgs:nixos/modules/hardware/graphics.nix>
-            package = pkgs.buildEnv {
-              name = "opengl-drivers-32bit";
-              paths = [ gl.package32 ] ++ gl.extraPackages32;
-            };
-          in "${package}";
-        } // fsSymlinksAsAttrs)
-    );
-  };
 }