chore(hypr): remove legacy .conf configs now that Lua is active

Hyprland loads hyprland.lua (not hyprland.conf) when present, so the
hyprlang configs are dead weight. Delete the Hyprland .conf files and
their gitignored host .conf counterparts, leaving only hypridle.conf and
hyprlock.conf (used by separate tools that still use hyprlang).

hypr/hosts/Rutherford.lua

@@ -1,5 +1,5 @@
 -- Host-specific overrides: Rutherford (desktop PC)
--- Converted from hosts/Rutherford.conf
+-- Loaded automatically by hyprland.lua via hostname detection.
 
 hl.monitor({
     output   = "DP-1",