drop acpi_call from nixos-hardware

fixes https://github.com/NixOS/nixos-hardware/issues/1114 and tlp also
no longer recommands it.

common/pc/laptop/acpi_call.nix

@@ -1,10 +0,0 @@
-# acpi_call makes tlp work for newer thinkpads
-
-{ config, lib, ... }:
-
-{
-  boot = lib.mkIf config.services.tlp.enable {
-    kernelModules = [ "acpi_call" ];
-    extraModulePackages = with config.boot.kernelPackages; [ acpi_call ];
-  };
-}