Revert "enable plasma"

This reverts commit 8ef4d1145f.

nixy/configuration.nix

@@ -404,13 +404,9 @@ in
       enable = true;
       dpi = 144;
       desktopManager.xterm.enable = false;
-      #desktopManager.plasma5.bigscreen.enable = true;
-      desktopManager.plasma6.enable = true;
       displayManager = {
         lightdm.enable = false;
         startx.enable = true;
-	sddm.enable = true;
-	sddm.wayland.enable = true;
       };
       windowManager.i3.enable = false;
     };
@@ -437,7 +433,7 @@ in
     };
 
     tlp = {
-      enable = false;
+      enable = true;
     };
 
     batteryNotifier = {