nixos/rshim: fix shell escape

Using escapeShellArg does not make sense here because (a) it turned the
list into a string, so the entire service failed and (b) because systemd
does not use the same escaping mechanism as bash.

nixos/modules/services/misc/rshim.nix

@@ -3,11 +3,11 @@
 let
   cfg = config.services.rshim;
 
-  rshimCommand = lib.escapeShellArgs ([ "${cfg.package}/bin/rshim" ]
+  rshimCommand = [ "${cfg.package}/bin/rshim" ]
     ++ lib.optionals (cfg.backend != null) [ "--backend ${cfg.backend}" ]
     ++ lib.optionals (cfg.device != null) [ "--device ${cfg.device}" ]
     ++ lib.optionals (cfg.index != null) [ "--index ${builtins.toString cfg.index}" ]
-    ++ [ "--log-level ${builtins.toString cfg.log-level}" ])
+    ++ [ "--log-level ${builtins.toString cfg.log-level}" ]
   ;
 in
 {