Remove Sway from the playbook, keep Noctalia configs

Drop the profile_desktop_sway role (tasks, templates), all Sway
dotfiles, desktop_sway_* vars, and wayland-sessions emptty path.
Noctalia dotfiles are preserved and deployed via desktop_void_dotfiles
on Void hosts; noctalia_bar_monitors/noctalia_screen_overrides kept
as config vars. Only i3 remains as the Void desktop session.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ansible/roles/profile_desktop_host/tasks/main.yml

@@ -19,17 +19,3 @@
     - "'i3' in (desktop_sessions_enabled | default([]))"
     - (host_i3_dotfiles | default([])) | length > 0
 
-- name: Copy host-specific Sway dotfiles
-  tags: [dotfiles, dotfiles:desktop, dotfiles:host, sway]
-  ansible.builtin.copy:
-    src: "{{ playbook_dir }}/../dotfiles/{{ hostname }}/{{ item.src }}"
-    dest: "{{ user_home }}/{{ item.dest }}"
-    owner: "{{ username }}"
-    group: "{{ user_group }}"
-    mode: "{{ item.mode }}"
-  loop: "{{ host_sway_dotfiles | default([]) }}"
-  loop_control:
-    label: "{{ item.dest }}"
-  when:
-    - "'sway' in (desktop_sessions_enabled | default([]))"
-    - (host_sway_dotfiles | default([])) | length > 0