nix: Misc removals

The options I use already seems to be default in NixOS.
I'm not sure about the backlight and the joystick,
keeping this around until I can confirm this is not needed.

config/automatrop/roles/system/files/xorg/touchpad.conf

@@ -1,6 +0,0 @@
-Section "InputClass"
-    Identifier "touchpad"
-    Driver "libinput"
-    MatchIsTouchpad "on"
-    Option "Tapping" "on"
-EndSection

config/automatrop/roles/system/tasks/main.yml

@@ -28,15 +28,6 @@
   notify: etc changed
   loop: "{{ xorg_common_config_dirs }}"
 
-- name: Configure Xorg touchpad behaviour
-  copy:
-    src: xorg/touchpad.conf
-    dest: "{{ item }}/30-touchpad.conf"
-  become: yes
-  when: display_server == 'x11'
-  notify: etc changed
-  loop: "{{ xorg_common_config_dirs }}"
-
 - name: Configure Xorg joystick behaviour
   copy:
     src: xorg/joystick.conf
@@ -86,25 +77,7 @@
     - systemd changed
   when: not auto_numlock
 
-# TLP configuration
+### STOPPED HERE ###
-
-- name: Start/enable TLP
-  systemd:
-    name: tlp
-    state: started
-    enabled: yes
-  become: yes
-  notify: etc changed
-
-# Network configuration
-
-- name: Start/enable dhcpcd
-  systemd:
-    name: dhcpcd
-    state: started
-    enabled: yes
-  become: yes
-  notify: etc changed
 
 - name: Configure wpa_supplicant
   template: